Experimentsofthiskindinboththe

Experiments of this kind ___in both the U．S and Europe well before the Second World War．

A．had conducted	B．have conducted
C．have been conducted	D． had been conducted

登录免费查看答案和解析

相关试题

Professor Williams keeps telling his students that the future __________ to the well-educated.

A．is belonged

B．is belonging

C．will be belonged

D．belongs

收藏答案/解析

Of all my friends,__________ is so diligent as Tom.

A．no one

B．none

C．either

D．neither

收藏答案/解析

If you leave this application form and go to another website, you will lose_____ you have already filled out on this form.

A．whatever

B．no matter what

C．whichever

D．no matter which

收藏答案/解析

Although he is old, he is still very much______.

A．living

B．live

C．alive

D．lovely

收藏答案/解析

______, his ideas was accepted by all the people at the meeting.

A．Strange as might it sound	B．As it might sound strange
C．As strange it might sound	D．Strange as it might sound

收藏答案/解析