__________ you understand the rule, you will have no further difficulty.A．While

题型：不详难度：来源：

__________ you understand the rule, you will have no further difficulty.

A．While

B．Once

C．Though

D．Unless

答案

解析

本题考查连词的区别辨析。once指的是“一旦”。

举一反三

Mary is short__________ her brother is very tall.

A．still

B．nor

C．while

D．when

题型：不详难度：| 查看答案

--Shall Mary come and play computer games?
--No,__________ she has finished her homework.

A．when

B．if

C．unless

D．once

题型：不详难度：| 查看答案

Can you imagine what a girl will look like___________ she comes across a rat in her room?

A．now that

B．though

C．in case

D．if

题型：不详难度：| 查看答案

Scientists say it may be five or ten years___________ it is possible to test this medicine on human patients.

A．since

B．before

C．after

D．when

题型：不详难度：| 查看答案

It is often said that the joy of travelling is______in arriving at your destination _____in the journey itself.

A．/ ; but

B．/ ; or

C．not; or

D．not; but

题型：不详难度：| 查看答案