ExperimentsofthekindinboththeU

Experiments of the kind ____ in both the U.S. and Europe well before the Second World Wall.

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

登录免费查看答案和解析

相关试题

It’s quite obvious that the aging population in China will cause _____ heavy pressure
on _____whole society in the future.

A．a; /

B．/; /

C．a; the

D．the; a

收藏答案/解析

35.It is said that dogs will keep you _____ as long as you want when you are
feeling lonely.

A．accompany

B．company

C．friend

D．safely

收藏答案/解析

.The artist made up his mind to devote all he could ____his English before
going abraod.

A．improving

B．to improve

C．imprve

D．to improving

收藏答案/解析

Although this medicine can cure you ____ your illness, it has a bad effect _____you.

A．for; in

B．for; on

C．of; on

D．of; at

收藏答案/解析

The square was so named ____a famous black leader in history.

A．in favour of

B．in search of

C．in need of

D．in honour of

收藏答案/解析