救生衣由特殊面料夹及可浮起的泡沫塑料制成。具有()性能。
A.体积大
B.重量轻
C.浮力大
D.重量大
参考答案:A, B
单词。
1. She's a very i____________ (印象深刻的) public speaker.
2. "Artificial I____________ (智能)" is a famous science fiction directed by Steven Spielberg.
3. Many modern arts are being displayed in that art g____________ (美术馆).
4. A lot of small companies have to fight for s____________ (生存).
5. The captain gave the order to a____________ (遗弃) the ship since it was sinking fast.
6. The hotel room had a g__________ (美丽的) view over the lake.
7. He first went to France as an e__________ (交换) student from Beijing.
8. The baby was f_________ (害怕) of being left by itself in the house.
9. In general, the bride's father gave her away at the wedding c____________ (仪式).
10. Is there a good restaurant in the n____________ (周围)?
The young teacher wants to help his students as much as he can, but ________ the other hand, he'd better help them learn on their own.