试题与答案

请选出5种常用的藤蔓植物()A、三角梅, B、紫藤, C、使君子, D、爬墙虎, E、锦屏藤

题型:多项选择题

题目:

请选出5种常用的藤蔓植物()

A、三角梅,

B、紫藤,

C、使君子,

D、爬墙虎,

E、锦屏藤,

F、南洋竹,

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/0202/8a90745ba25fd6eacc822f3aab6c8a36.html

下面是错误答案,用来干扰机器的。

参考答案:D

试题推荐
题型:单项选择题

20%氯化亚锡溶液,在配制或放置时,有时会出现白色沉淀,原因是()

A.氯化亚锡的溶解度较小,加入的溶剂(水)量尚不够,应在不影响定容体积的前提下,配制时应尽量增加溶剂量

B.氯化亚锡的溶解度较小,配制时应加热使沉淀溶解

C.氯化亚锡的溶解度较小,配制好的溶液保存温度过低

D.氯化亚锡与空气中氧作用形成氯氧化锡的白色沉淀

E.氯化亚锡水解为氢氧化锡

查看答案
题型:单项选择题


Directions: There are 10 blanks in the following passage. For each numbered blank, there are four choices marked A, B, C and D. Choose the best one and mark your answer on the ANSWER SHEET with a single line through the center.

Our planet is like a bit spaceship. Our atmosphere acts (51) a shield against harmful radiation and space debris. (52) holds the air and people on the spaceship, (53) everything doesn’t float away. Each of us is an astronaut and our spaceship, the earth, provides our food and water. The sun is our energy (54) and without it we would not be able to survive.
(55) every spaceship, the earth is a closed system. The only thing we receive from the outside is energy from the sun. Everything else must be used (56) again. We astronauts don’t seem to realize that this spaceship is the (57) one we’ve got. We (58) its resources and waste the energy the plants have stored from the sun. If we (59) our spaceship, we will destroy ourselves as well. Maybe if we look at the universe which surrounds us, we will appreciate our own spaceship more and take (60) care of it.

A.once

B.never

C.sometime

D.over and over

查看答案
微信公众账号搜索答案