一盏探照灯装在西面看台上，灯光朝东斜向下射到没有水的游泳池底

搜题请搜索小程序“爱下问搜题”

问题选择题

一盏探照灯装在西面看台上，灯光朝东斜向下射到没有水的游泳池底的中央，在将游泳池逐渐灌满水的过程中，池底的光斑将[ ]

A.向东移动

B.向西移动

C.先向东移动后向西移动

D.仍在原来位置

答案

选择题

以前人们认为，材料的强度和韧性这两种属性不可兼得。但某工程团队利用“电纺”技术，开发出细小的聚丙烯腈纳米纤维，并通过小喷嘴喷射出去，做成的材料既轻又薄，不仅更坚固，而且更具韧性。该团队之所以成功，是因为

A．深化了理论认识，推动事物质变

B．立足于实践探索，改变实践手段

C．发挥了意识的目的性，突破条件创造联系

D．发挥了主观能动性，消除事物之间的矛盾

补全对话，情景问答

根据对话情景填入所缺单词，每空一词。

A: Hi, Vera. 1 was your vacation?

B: It was great!

A: Where did you go?

B: 1 went to Tokyo 2 my family.

A: Really? Wow! 3 did you do there?

B: Well, we went to a lot of museums.

A: Oh, how were they?

B: They were really 4 .But they were also very 5 .

A: 6 you go shopping?

B: Yes, I did.

A: And how were the people? Did you meet any 7 people?

B: Yeah. The people were really 8 . We 9 dinner at their house.

A: How was the food?

B: It was 10 .I liked it very much