World No Tobacco Day on May 31st, and scientists have had the term “third-hand” smoke introduced to_刷题宝

题干

World No Tobacco Day on May 31st, and scientists have had the term “third-hand” smoke introduced to the public．

A：falls

B：fell

C：has fallen

D：is falling

上一题下一题 0.0难度选择题更新时间:2017-08-26 09:54:11

答案(点此获取答案解析）

A

同类题1

“礼到人心暖，无理讨人嫌”对这句话理解错误的是（）

同类题2

阅读短文，选择正确的答案。

Bai Ling was happy yesterday. Because it was her father's birthday. She boughtgifts for him. And they took pictures in the park. In the afternoon, they ate delicious food. Bai Ling has a pen pal. He is Pat. He lives in the US. Yesterday he came here. He sang and danced. Oh, he also bought gifts. We had a good time.

同类题3

如图，在△ABC中，若∠B=2∠C，AD⊥BC，E为BC边中点，求证：AB=2DE．

同类题4

同音字，填空。

nǎo

头____　　烦____　　大____　　苦____

yú

____快　　____树　　____是　　年____古稀

mò

寂____　　沙____　　____名奇妙　　____无闻

同类题5

在N₂+3H₂═2NH₃反应中，经过一段时间后，NH₃的浓度增加了0.6mol/L，在此时间内，H₂表示的平均反应速率为0.45mol/（L•S）．所经过的时间是（）

小学学科试题库

初中学科试题库

高中学科试题库