1 . There is only one way to happiness and that is to ______ worrying about things which are beyond the power of our will.

A．cease

B．recall

C．acknowledge

D．guarantee

2 . The young couple, tired of seeking after wealth in the big city, decided to return ______ they once lived.

A．that

B．what

C．which

D．where

3 . —How can I believe you can pay the debts on time?
—I’d like to offer my house as a ______.

A．guarantee

B．symbol

C．promise

D．permission

4 . Since Tom is good at ______ stories, I think he will be a good novelist in the future.

A．turning up

B．taking up

C．showing up

D．making up

5 . As a symbol of Chinese history, the Palace Museum ________ the cultural memory of the country.

A．preserves

B．prevents

C．acquires

D．declares

6 . Self-driving cars ______ widely with advances in artificial intelligence in a few years.

A．will emerge

B．will be emerged

C．have emerged

D．have been emerged

7 . Scientists are ______ about the United States’ scheduled return to the Moon due to the delays in the development of the required spacesuits.

A．frank

B．skeptical

C．casual

D．identical

8 . Everything in nature ______ a new look in spring with snow melting and wind breezing.

A．turns over

B．gives off

C．puts up

D．takes on

9 . The universal language of music helps to achieve ______ communications between countries aim at.

A．how

B．what

C．which

D．why

10 . On which floor are children’s toys?

A．The 3rd floor.

B．The 4th floor.

C．The 5th floor.