The number of deaths from heart disease will be reduced greatly if people_______ to eat more fruit and vegetables.

A. persuade B. will persuade

C. be persuaded D. are persuaded

Some scientists believe that it won’t be long _______ robots are widely used in all walks of life．

A． since B． after C． before D． until

For quite a few students, their teacher’s advice is more important than ___ of their parents.

A. one B. that C. it D. any

This book is said to be a very special one, because it _______ many events not found in other history books.

A. covers B. writes C. prints D. reads

With many forests being destroyed, huge quantities of good earth ______ each year.

A. is washing away B. is being washed away

C. are washing away D. are being washed away

Cao Cao’s tomb is reported ______ in China, which attracts nationwide attention.

A. being found B. to be found

C. having been found D. to have been found

Only ____ as a translator _____ how important it is to understand foreign cultures.

A．when did I work; I realized

B．when I worked; I realized

C．when did I work; did I realize

D．when I worked; did I realize

Have you ever met with this case in your life you can't understand others even if they have said something several times？

A. where B. what C. that D. which

We should think carefully about ______ Mr. Needham said at the meeting.

A. that B. what C. which D. /

It was not until 1911, _______ the first vitamin was identified, _______ people realized the importance of it．

A． when; which B． when; that

C． that; which D． that; that