亚洲的水稻种植业是一种精耕细作的集约型农业。

连续阴雨时，生活在土壤中的蚯蚓会爬出洞穴，此现象与生物哪一因素有关？（    ）

A．呼吸

B．营养

C．排出体内废物

D．生长和繁殖

1.65+1.65+1.65+1.65=______×______．

Colleges in the US have added a new subject, “great chemistry”, to their curriculum today. “Green chemistry (53) how we can develop products that won’t (54) the environment,” explains Paul Anastas, director of Yale University’s Center for Green Chemistry and Green Engineering, opened at the beginning of this year. The American Chemical Society, (55) approves more than 600 college chemistry programs, only lists about a dozen that teach green chemistry. But that (56) is growing.
Cambridge College in Massachusetts is offering “ an introduction to green chemistry” course this gall and is offering the nation’s first bachelor’s and master’s (57) in green chemistry. The program will have classes in environmental science and even environmental (58) and policy. These subjects are not (59) taught to chemistry major.
Employers (60) the introduction of green chemistry. Businesses are increasing seeking graduates (61) backgrounds in the subject because it can help them make or save money in he development and manufacturing of products. “We need people who can not only understand their place (62) , but also understand the worldwide perspective,” said Adam Peterson, a chemical division manager at Dow Corning Corp.

A．looks on
B．looks in
C．looks at
D．looks after

患者女性，40岁，半年来口腔反复疼痛、“溃疡”就诊，半年来患者有反复低热，原因不明。检查可见患者消瘦，慢性病容，口内颊黏膜、舌黏膜、腭黏膜大量灰白色假膜，易撕下，遗留浅层糜烂或渗血的表面，牙龈红肿，部分龈缘糜烂

如果147题的检查呈阳性，询问患者有卖血的历史时，必须检查

A．血清HSV抗体
B．血清抗HSV-Ⅰ抗体
C．血清抗柯萨奇病毒抗体
D．血清抗EB病毒抗体
E．血清抗巨细胞病毒抗体

消费品价格变化时，连结消费者诸均衡点的线称为（）。

A.收入-消费曲线

B.需求曲线

C.价格-消费曲线

D.恩格尔曲线