Before eating steak, you need to check whether the knife teeth clear.（）

Eating too much fat can ___________ heart disease and cause high blood pressure.

A) attribute to B) attend to C) contribute to D) devote to

A.used to eating

B.used to eat

C.are used to eat

D.are used to eating

A、composes of

B、makes up of

C、consists of

D、is consisted of

A.while

B.just as

C.when

D.as

【题目描述】

5．If you plant watermelon seeds in the spring, youfresh watermelon in the fall.

A．eat

B．would eat

C．have eaten

D．will be eating

答案分析：

解析：本题考查条件句的时态。根据句意：如果你在春天种下西瓜种子，你会在秋天吃到新鲜的西瓜。可以判断这是真实的条件从句，会发生的事情，所以选择will be eating表将来。

【我的疑问】（如下，请求专家帮助解答）

为什么不是虚拟的，真实的条件从句和虚拟语句有什么不同么

A.until

B.since

C.from

D.before

Before the first non-stop flight made in 1949, it ________ necessary for all planes to land for refueling.

A) would be B) has been

C) had been D) would have been

peared around the corner of the street.

A) vision B) glimpse

C) look D) scene

of the cottage came __________ view.

A) from B) in

C) before D) into

A __________ to this problem is expected to be found before long.

A) result B) response C) settlement D) solution