1 . A range of lectures were arranged          the aim of discussing the impact of social media        sports event.

A．with; on

B．by; on

C．with; to

D．by; to

2 . As a high school student, you should ________ your study and never give up working hard.

A．compare to

B．focus on

C．turn to

D．have an impact on

3 . My brother has always been a ________ force in my life, because he always encourages me when I am in trouble.

A．positive

B．negative

C．frightened

D．opposing

4 . Her excellent oral English and optimistic attitude gave me a deep ________.

A．description

B．impression

C．expression

D．collection

5 . Everyone’s fingerprints are ________.

A．universal

B．unique

C．uncertain

D．unbelievable

6 . The football team of No. 1 high school invited us to a match and we decided to accept the ________.

A．chance

B．match

C．challenge

D．opportunity

7 . Tu Youyou and her team used modern research methods to ________the Chinese herbs (药草) one by one.

A．invite

B．include

C．invent

D．investigate

8 . Something that is unique is the only one of its kind.

A．罕见的

B．特别的

C．普通的

D．独一无二的

9 . These people are in shock.

A．犹豫

B．激动

C．失望

D．震惊

10 . If you deliver something somewhere, you take it there.

A．递送

B．发表

C．接生

D．开发