根据句意，用括号内所给单词的适当形式填空

1.A glass is used for ________(drink) water.

2.What is the most         (use) invention in the world?

3.Do you know the          (heat) ice cream scoop?

4.This kind of bicycle was         (invent) by a middle school student.

5.What do you think of these         (invent)?

用所给动词的适当形式填空。（每空不限一词）

46. Chinese __________ by the largest number of people in the world now. (speak)

47. They shouted and _________( clap ) their hands excitedly.

48. I ______________ (lose) my key. I can’t open the door.

49. —When will we go to watch the basketball match in the sports centre?

—Not until the work _______________ (finish) tomorrow.

50. This kind of bicycle _______________ (sell) well in our country.

Bicycles are very popular around the world today．People ride their bicycles for exercise and enjoyment．In some places，people use a bicycle to get to work．In other places，bicycle riding is a very popular exercise to people who live in cities．But who invented the first bicycle? In 1791，a Frenchman named Comte de Sivrac invented and owned the first bicycle．Mrs. Sivrac rode（骑）the bicycle in Paris．The handles（把手）and the seat were wooden．This bicycle was very difficult to move．A rider even had to pick up the front wheel to change direction．Finally，the bicycle had no brakes for stopping or pedals for the feet! Riding a bicycle was a great risk．

In 1817，a German named Baron von Drais de Sauerbrun made the first bicycle better．The seat became more comfortable．The wheel could now change direction．His ride in the forest took only one hour instead of three hours on foot，which surprised people at that time．

Sauerbrun brought this kind of bicycle from Germany to France．Then Denis Johnson，an Englishman，made a bicycle for women．It had space for their dresses to hang down．But these bicycles still had no brakes or pedals，and riders often got hurt．These bicycles and the people who rode them were not very popular．

It took another forty-five years for the bicycle to become popular．More than 100 years later，bicycle riding is more popular than ever．In fact，in India and China，there are still many more bicycles than ears．

1．Which of the following best describes the first bicycle?

A．Very popular．                                    B．Easy to carry．      

C．Ugly-looking．                                    D．Difficult to ride．

2．Why was it a risk to ride the first bicycle?

A．Because it had no pedals for the feet．

B．Because it was difficult to control（控制）．

C．Because people would laugh at you．

D．Because handles and the seat were wooden．

3．Which of the following was not improved by Sauerbrun to the first bicycle?

A．Brakes were added to it．

B．It was made to go faster．

C．The wheel could now change direction．

D．The seat was made more comfortable．

4．What’s the major difference between Denis Johnson’s bicycle and the earlier ones 7

A．It was more comfortable．                          B．It was faster and safer．

C．It had space for the rider's dress．               D．It had metal handles and seat．

5．The best title（题目）for the passage would be                 ．

A．Bicycles Around the World                          B．How to Ride a Bicycle

C．The Greatest Invention                                D．The First Bicycle