D

Residents along Australia’s east coast awoke in the morning to an orange sky as winds swept millions of tons of red dust from the country’s inland and dumped it on Sydney．

Tanya Ferguson，living in Sydney，saw that the room was completely orange．She thought there was a bush fire．But when she went outside，the entire city was covered in a film of orange dust．

“It was like being in the outback(澳大利亚内陆)，but it was right here in the city，”she said On that day，a big dust storm swept through Sydney．It covered the city in orange dust for about eight hours，making landmarks such as the Sydney Opera House and Harbor Bridge invisible．

The storm affected the transportation system．Flights were delayed．Roads were busy as drivers struggled in the difficult conditions．Children and the elderly were told to stay indoors until the dust had cleared．Later strong winds blew it out to the sea and up the coast．

No one was hurt in the storm，though health officials answered hundreds of calls from

people with breathing difficulties．Emergency services responded to hundreds of calls about

tree branches brought down by strong winds．

Dust storms are common in the Australian outback，where the land is arid(贫瘠的)．But the storms rarely reach the coastal regions．

Officials said it was the worst dust storm of the past 70 years．Air pollution levels were

15，500 micrograms of pollutants per cubic meter．

“On a clear day the pollutants are around 10—20 micrograms per cubic meter，”said Chris

Eiser of the NSW department of the environment．

Experts said that dry conditions in the outback and strong winds caused the sandstorm．

“Ten very dry years over inland southern Australia and very strong winds have combined to produce the storm，”said Nigel Tapper，an environmental scientist at Monash University， Australia．

68．The article is about　　　　　　 ．

A．the causes of the major dust storm in Australian cities

B．different reactions to a dust storm in Australia

C．the damage caused by the big dust storm in Australia

D．the worst dust storm in Australia in the past 70 years

69．Which of the following is TRUE?

A．The dust storm didn’t blow up to the coastal regions of Australia．

B．The level of air pollution was very high due to the dust storm．

C．People called the emergency service because they had got lost．

D．Children stayed indoors for the schooling had been cancelled．

70．From the passage we can see that　　　　　　　 ．

A．Tanya Ferguson lives in the Australian outback at the moment

B．a bush fire may have brought the orange dust along the coast

C．this terrible sandstorm lasted about 24 hours after it hit the city

D．Sydney’s landmarks were out of sight when the storm happened

C

Car companies are developing vehicles that will plug into electric sockets，just like many laptops，digital cameras，cell phones and Mp4 do．Called“plug-in vehicles”，these cars will get most of their power from electricity. Their drivers won't have to stop at gas stations as often as usual．

The technology is more than just cool. In our car-filled world，plug-in vehicles could reduce the amount of gas we use，which keeps rising in cost now and then. Besides，driving around in these vehicles may even help the environment．Gas-burning cars produce a lot of greenhouse gas，which causes globe warming.

The first company-produced plug-in vehicles could hit the roads by 2010. But engineers still have a lot of work to do to make the technology practical and inexpensive．

Batteries(电池) are the biggest challenge. In the plug-in-vehicle world，Li-ion(锂离子)batteries are getting the most attention．These batteries can store a large amount of energy in a small package，and they last a longer time between charges．Li-ion batteries can fit laptops，cell phones，heart instruments and other similar pocket ones.

But because cars are so big and heavy, it would still require a suitcase-sized Li-ion batteries to power about 12km of driving．What's more，the batteries are much expensive．

“A car filled with batteries could go a long distance，”says Ted Bohn, an electrical engineer in Chicago．“But it couldn't pull any people．and it would cost $100,000．”

So researchers need to work out how to make batteries smaller and cheaper，among other questions.

“The answers don't exist yet，”Bohn says，“As a kid，I thought someone someplace knows the answer to everything．All of these questions haven't been decided．That's what engineering is about-making a guess，running tests and getting fine results．”

64．The passage mainly talks about　　　　 of a new car

A．the developing　　 B．the speed　　 C．the appearance D．the batteries

65．Which is true according to the passage?

A．The“plug-in vehicles”will use electricity completely as driving power．

B．The new technology will help protect our environment．

C．The technology of using electricity as driving is quite practical now．

D．The biggest challenge of the new technology is that it will cost us more energy．

66．How does Bohn feel about the future of the technology according to the last paragraph?

A．Confident　　 B．Puzzled．　　 C．Worried． D．Disappointed．

67．According to the passage，the new technology is facing the following problems except that　 ．

A．the new technology cannot come into use at present

B．the cost of the new technology is quite high

C．the government won't support the technology

D． the size of the batteries is too big at present

B

(Xinhua)

Chinese and Russian armed forces on Wednesday began a five-day joint military drill aimed at boosting their troops’ capability（提高部队能力）in fighting against terrorist. They will conduct a joint antiterror military exercise beginning July 22.

The exercise, named “Peace Mission-2009”, will be carried out in Russia’s Far East area and the Shenyang Military Area Command in northeast China, according to the two countries’ defense authorities. It will last five days.

About 1,300 people from the army and air force of each side will participate in the exercise. The Russian forces would also send an airborne assault unit(空降突击连) to participate in the exercise, according to the Defense Ministry.

The more than 2,600 soldiers have conducted joint exercise before. From July 23 to 26, the troops will conduct the exercise at a training base in the Shenyang Military Area Command where theater-level command headquarters(司令部) of both sides will be established.

The deputy chief of general staff of Chinese armed forces Ma Xiaotian told reporters this morning that the Chinese military is well prepared for Sunday’s joint anti-terror drill with Russia in a training base in Baicheng, Jilin Province.

The other four member states of the Shanghai Cooperation Organization (SCO), Kazakhstan, Kyrgyzstan, Takistan, Uzbekistan and the SCO’s secretariat will send military observers.

China, Russia and other member states of the SCO held two similar anti-terrorism exercises under the name of “Peace Mission” in 2005 and 2007 respectively.

The exercise was not targeted at any particular third party, but would show the abilities and resolution of both sides to jointly deal with various kinds of security threats and crack down on terrorist, separatist and extremist forces, the spokesman said.

60.In which day will the military exercise end?

A．On July 22.　　 B．On July 23.　 C．On July 25.　 D．On July 26.

61.How many soldiers in all between China and Russian will conduct joint exercise?

A．More than 1,300.　　 B．Exactly 2,600.

C．More than 2,600.　　　 D．Less than 2,600.

62. The passage tells us that　　 .

A．the five-day joint military drill is held in Russia’s Far East area.

B．China, Russia and other member states of the SCO, held three similar anti-terrorism exercises before this

C．not only the other four member states of the SCO, but also the members from America and France will send military observers

D．the target for the exercise is to show two nations strong determination to beat the terrorists severely and at the same time to show their military abilities to jointly deal with various kinds of security threats internationally.

63. What can be the best title for the text?

A．Peace Mission-2009.　　　　 　　　　B．A Five-day Joint Military Drill.

C．Mission for Peace Tarets Terrorists.　 D．Chinese Forces Ready for Sunday’s Joint Drill.

35．Now that the sign reads, “No person ______ smoke here”, please choose a seat in the smoking area over there if you _______ smoke.

A. must; shall　 B. will; must　　　　　　　　　　　 C. shall; must　 D. can; should

34．　　　 to be the best one in the group, she had an opportunity to enter for the final competition.

A. Judging　　　　 B. To Judge　　　　　 C. Having judged　　 D. Judged