1 . According to scientists, our mental abilities begin to_____________ from the age of 27 after reaching the highest level at 22.

A．decline

B．deserve

C．demonstrate

D．demand

2 . The number of tourists to the resort   ________ (decline) by 10% in the past ten years. (所给词的适当形式填空)

3 . The number of tourists to the travel destination________ by 30% last year because of the pandemic.

A．deserved

B．refused

C．relished

D．declined

4 . Car prices______ (decline) for six months because these prices are negotiable. (所给词的适当形式填空)

5 . According to scientists, our mental abilities begin to ________ from the age of 27 after reaching the highest level at 22.

A．differ

B．shrink

C．contract

D．decline

6 . The country’s economy ______________ (decline) in the past twenty years. No one knows how long it will be before it stops decreasing. (所给词的适当形式填空)

7 . The number of seals is d________(减少) due to human beings’ hunting activities. （根据中英文提示填空）

8 . His influence continued to d________ (减少，下降). (根据中英文提示填空）

9 . The number of tourists to the resort ________ by 5% last year.

A．has declined

B．have declined

C．declined

D．having declined

10 . She d________(谢绝)to have lunch with her friend, saying that she wasn’t feeling well. (根据中英文提示单词拼写)