15.Researcherstodevelopvaccine

15. Researchers _______ to develop vaccines and this will probably take several months to complete.

A．are working

B．worked

C．will work

D．has worked

登录免费查看答案和解析

相关试题

He's __________ to fail the exam if he doesn't do any revision.

A．near

B．fit

C．bound

D．easy

收藏答案/解析

The doctor said he must avoid excitement in order for the disease to __________.

A．treat

B．believe

C．heal

D．deal

收藏答案/解析

Microscope will __________ much that cannot be seen with the naked eye.

A．heal

B．bear

C．reveal

D．fold

收藏答案/解析

He __________ fine new clothes than for anything else.

A．takes more away	B．takes more in
C．cares more for	D．cares more about

收藏答案/解析

—According to my grandma, it is a good idea to eat chicken soup when you have a cold.
— __________, scientists agree with her.

A．Sooner or later	B．Once in a while
C．To be exact	D．Believe it or not

收藏答案/解析