We aren’t sure of the weather. We ______

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问题选择题

We aren’t sure of the weather. We _______ sightseeing unless it_________ tomorrow.

A．will go; won’t rain

B．won’t go; doesn’t rain

C．will go; rains

D．won’t go; rains

答案

答案：C

题目分析：句意：我们对天气不确定。我们明天去观光旅行，除非天下雨。在含有条件状语从句的复合句中，如果主句用一般将来时，那么从句只能用一般现在时，所以选C。

单项选择题

Which one of the following statements about the t - distribution is TRUE（）

A. The t- distribution is the appropriate distribution to use when constructing confidence intervals based on large samples.

B. Compared to the normal distribution, the t -distribution is more peaked with more area under the tails.

C. The t - distribution approaches the standard normal distribution as the number of degrees of freedom becomes large.

选择题

关于下图的说法，错误的是：

A．这是一座活火山

B．这是日本的富士山

C．图中樱花盛开

D．该景观是热带景观