环境污染已成为人类面临的重大威胁，各种污染数不胜数，下列与环_爱下问搜题

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问题选择题

环境污染已成为人类面临的重大威胁，各种污染数不胜数，下列与环境污染有关的是

①酸雨②潮汐③温室效应④臭氧层破坏⑤围湖造田[ ]

A．①③④

B．①④⑤

C．②③④

D．①②③④⑤

答案

答案：A

选择题

根据汉语意思选择正确句子。

1. 我家有5个家庭成员。[ ]

A. My family has eight members.

B. My family has five members.

C. My family has four members.

2. 瞧！我的父母亲和我。[ ]

A. Look! My parents and me.

B. Look! My parents.

C. Look! My parent and me.

3. 树上有多少个苹果？[ ]

A. How many apples are there near the tree?

B. How many apples are there on the tree?

C. How many apples are there under the tree?

单项选择题

表示船舶横倾程度的常用方法是（）

A.左右舷吃水差

B.横倾角

C.干舷甲板的左右舷边离水面的高度

D.甲板的倾斜程度