It’ssaidthatthiskindofplantonl

It’s said that this kind of plant only gives off this strange perfume on ________ conditions which the scientists are trying to figure out now.

A．outstanding

B．certain

C．obvious

D．ordinary

登录免费查看答案和解析

相关试题

Wang Wei is one of many Chinese students _______ “on the go’.

A．who lives life	B．who live life
C．that lives living	D．that live living

收藏答案/解析

With the development of science and technology, people’s life _______ in the past few years.

A．improved	B．has improved
C．is improving	D．had improved

收藏答案/解析

We have moved into a four-room flat so far. Our room is between _____.

A．Mary’s and Helen’s	B．Mary and Helen’s
C．Mary and Helen	D．Mary’s and Helen

收藏答案/解析

---I wonder why Mr Green hasn’t showed up at the meeting yet.
---I’m not sure, but he _______ in a traffic jam driving here.

A．could be stuck	B．might stuck
C．might have been stuck	D．must have stuck

收藏答案/解析

When I got to the cinema, the film _____ for five minutes.

A．had begun	B．has been on
C．has begun	D．had been on

收藏答案/解析