到目前为止,我们学习了平移变换、旋转变换、轴对称变换和相似变换,试想在生物课上用放大镜去观察细小的生物,所看到的生物体和原来的生物体之间的关系属于( )变换。
相似
下列物质中()不会引起催化剂中毒。
A、硫化物
B、甲醇
C、丙烯
D、氩气
根据句子意思,用括号中所给单词的适当形式填空,并将答案填写在答题卡的相应位置上。
If you don’t tell me what the problem is, I can’t 小题1: (help) you.
Miss Li is a kind teacher and she always talks to us 小题2: (gentle).
The teacher told us that the gravity on Mars 小题3: (be) only about three-eighth of that on Earth.
Mr Black has been in China for three years and now he is used to 小题4: (eat) Chinese food.
The Eiffel Tower, a cultural icon of France, was completed at the end of the 小题5: (nineteen) century.
It is worth 小题6: (mention) that Nanjing has entered Top 10 Appealing Chinese Cities.