在△ABC中,a:b:c=3:5:7,则△ABC的最大角的度数为[ ]
A.60°
B.135°
C.45°
D.120°
答案:D
词汇运用
1. Her cheerful spirits ________(感染了) the whole class.
2. As a young boy he showed great interest in ________(科学) and did many ________(科学的)
experiments in his spare time,which would make him a great ________(科学家) in time.
3. After a long discussion,they ________(得出结论) that the man was lying.
4. Today I have some important things ________(处理).
5. The baby was left ________(毫无遮蔽的) to the wind and rain.
6. We are ready to ________(承担责任) for what happened.
7. The teacher ________(宣布) that we would have a few days off and there would be ________(通知) for the exact time.
8. I ________(接到指令) to wait here until the lecturer arrives.
9. Does smoking ________(对……起作用;贡献) lung cancer?
10. Our idea to set up a music club in the neighbourhood meet many ________(拒绝).
下列有关土地市场需求与供给的说法中,错误的是( )。
A.非土地经营性的使用者,获取土地时重视土地的使用价值
B.以土地为经营对象的使用者,获取土地时注重土地的交易价格
C.由于土地的边际收益递减性,土地供给中很容易出现投机和垄断价格的情况
D.土地的供给由于它的固定性而对市场的价格信号反应缓慢