We _______ to repair the machine, now it works very well.

A. tried　　　　　 B. did our best　　 　 C. tried our best　　 　D. managed

There are many kinds _____, but I don’t know which to buy.

A. to be chosen　　　　　　 B. to choose from

C. to choose　　　　　　　　 D. for choosing

I thought her nice and honest　　 I met her.

A、first time　　 B、for the first time　　 C、the first time　　　 D、by the first time

—Who broke the window? Anybody you know?

—Well，it ________ be Jackson，but that’s just a guess.

A. must 　　 B. would 　 C. might 　　　 D. should

If the boss wants to fire me, he has to give me two months’ ____.

　 A. information 　 B. advice　　　　 　 C. message　　　 D. notice

对开车上瘾的人来说用车过于频繁。(be addicted to)

Bamboo (竹子) is one of nature’s (自然) most surprising plants． Many people call this plant a tree, but it is a kind of grass．

Like other kinds of grass, a bamboo plant may be cut very low to the ground, but it will grow back very quickly． A Japanese scientist reported one bamboo plant which grew 1.5 meters (4 feet) in 24 hours! Bamboo grows almost everywhere in the world except Europe． There are more than 1, 000 kinds of bamboo．

Not all bamboo looks the same． Some bamboo plants are very thin． They may only grow to be a few centimeters wide while others may grow to more than 30 centimeters (1 foot) across． This plant also comes in different colors, from yellow to black to green．

Bamboo has been used to make many things such as hats and kitchen tools(厨房用具)． Because it is strong, bamboo is also used to build buildings．

Many Asian countries have used bamboo for hundreds of years． They often use bamboo for buildings and supporting (支撑) new buildings and bridges while they are being built．

In Africa, poor farmers are taught how to find water using bamboo． These African countries need cheap way to find water because they have no money, and their fields often die from no rain and no water．Bamboo pipes (管子) help poor farmers bring water to their thirsty fields without spending a lot of money．

1．How is bamboo like grass?

　 A．It grows quickly． B．It’s wood． 　　　　 C．it is easy to cut． D．It is very thin．

2．Though you can see bamboo everywhere, it doesn’t grow　　 ．

A．in China　 　 B．in Europe C．on mountains D．in Africa

3．Why is bamboo used by African poor farmers? Because　　　 ．

　　　　　　 A．it is cheap　 B．it has different colors C．it is strong　 D．it has been used by Asians

4．In Asia, bamboo has been used for　　 ．

　　　　　　　 A．a short time　　　　　　　 B．many thousands of years

C．many hundreds of years　　　 　　　　　　　 D．about 100 years

Paper produced every year is three times ______the world’s production of vehicles.

　　 A．as heavier as B．more heavier　 C．of the weight of　 D．the weight of

Mike must be angry with me, for he walked　　　 me without even saying hello.

　 A．past　 B．on C．at D．over

He came back late ,　　　 time all the guests had already left .

A．after which 　 B．by which 　C．during which 　D．at which