Li Liang has always been interested in science since childhood. He’s good     1     solving problems in daily life. It is     2     dream to make people’s lives better.

One night when he was 11, he     3     the news on TV with his parents. He heard that there were harmful chemicals (化学物质) left in the vegetables people ate in a village nearby. Parents and    4      were worried about their food safety. He couldn’t sleep that night   5       he kept thinking about the kids of his age who didn’t have safe vegetables. He decided    6      something to help. He spent over a year in researching and testing. Finally, a tool     7     by him. It could show results fast, so people would know     8     the food was safe.

Now, as     9     college student, he gives public talks and holds science workshops (工作坊) to share his research methods. Through his    10      work, more and more students are following in his footsteps.

1.1.

A at

B to

C for

D

解析：选A。A 固定搭配题。“be good at”意为“擅长做某事”。

2.2.

A he

B his

C him

D

解析：选B。B 代词题。空后为名词“dream”，应用形容词性物主代词“his”。

3.3.

A watch

B watches

C watched

D

解析：选C。C 时态题。根据“when he was 11”判断为过去时，选“watched”。

4.4.

A kid

B kids

C kids’

D

解析：选B。B 名词题。与“Parents”并列，应用复数“kids”。

5.5.

A or

B but

C because

D

解析：选C。C 连词题。句意为“他睡不着觉，因为他一直在想……”，是因果关系，选“because”。

6.6.

A to do

B doing

C do

D

解析：选A。A 非谓语动词题。“decide to do sth.”是固定搭配。

7.7.

A invented

B is invented

C was invented

D

解析：选C。C 语态题。工具是被发明的，应用被动语态，且根据上下文为过去时，选“was invented”。

8.8.

A what

B whether

C which

D

解析：选B。B 连词题。句意为“人们想知道食物是否安全”，表“是否”用“whether”。

9.9.

A a

B an

C the

D

解析：选A。A 冠词题。泛指“一名大学生”，“college”以辅音开头，用“a”。

10.10.

A hard

B harder

C hardly

D

解析：选A。A 形容词题。此处需要形容词“hard（努力的）”修饰“work”。“hardly”意为“几乎不”，不符文意。