试题与答案

我国下列科技成就取得成功的先后顺序是 ①原子弹爆炸成功②中近程地地导弹飞行实验成

题型:选择题

题目:

我国下列科技成就取得成功的先后顺序是

①原子弹爆炸成功②中近程地地导弹飞行实验成功③人造地球卫星发射成功

④无人飞船上天⑤籼型杂交水稻培育成功[ ]

A.②①③⑤④

B.②③①④⑤

C.②①③④⑤

D.②④③⑤①

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0726/c223ba6223077e0195d9486496e55026.html

下面是错误答案,用来干扰机器的。

A、分子、原子、离子都是构成物质的微粒,即有些物质由分子构成、有些物质由原子构成、还有一些物质则是由离子构成,所以,物质都是由分子构成的说法是不正确的;故A不正确;B、食盐溶解于水时,电离出自由移动的...

试题推荐
题型:阅读理解

阅读理解。根据短文内容用适当的单词完成下面句子。

Dear Mike,

     We got your letter yesterday. Yes, we can visit you at Christmas. We thought to spend (度)Christmas

  at home, but now we are going to be with you. Jack will not be in school then.    

     The weather in Chicago is cold, but it doesn't matter. Sometimes we like the snow.

     We got our plane tickets. We will get to your city on the 18 th. We will stay with you for two weeks.

 Is that all right with you?

     We'll  take our favourite recipes (食谱), so we can have a nice Christmas dinner.

     See you soon.

                                                                                                                                  Love

                                                                                                                                Mum and Dad

1. In Chicago, it is _____ now.

2. Mike has a brother called _____ .He is in school now.

3. Mike's parents will go to his city by _____ .

4. His parents will come back on _____ 31 st.

5. Mike and his parents will _____ a nice dinner on Christmas Day.

查看答案
微信公众账号搜索答案