如图所示，竖直放置的平行金属板带等量异种电荷，一带电微粒沿图中直线从a向b运动，

在评估划拨土地使用权价格时，要考虑出让土地使用权与划拨土地使用权之间的( )对价格的影响。

A．用途差别
B．区位差别
C．权利差别
D．使用者差别

根据《建筑安装工程费用项目组成》（建标[2003]206号），职工福利费属于建筑安装工程费用中的（）。

A．规费

B．措施费

C．企业管理费

D．人工费

反映铁耗竭的指标（）。

A.运铁蛋白饱和度

B.血清铁蛋白

C.红细胞转酮醇酶活力

D.红细胞游离原卟啉

E.血红蛋白

微小胃癌是指（）

A．癌灶的直径＜2cm

B．癌灶的直径＜1.5cm

C．癌灶的直径＜1cm

D．癌灶的直径＜8mm

E．癌灶的直径＜5mm

The first time I remember noticing the crossing guard was when he waved to me as I drove my son to school. He (31) me with a puzzle-all because he waved to me like someone does on seeing a close friend. A big, (32) smile accompanied his wave. For the next few days I tried tO study his face to see if I knew him. I didn’t. Perhaps he had (33) me for someone else. By the time I contented myself with the conclusion that he and I were strangers, we were greeting each other warmly every morning like old friends.

Then one day the (34) was solved. As I approached the school he was standing in the middle of the road (35) his stop sign. I was in live behind four cars. Once the kids had reached the safety of the sidewalk, he lowered his sign and let the cars (36) . To the first he waved and smiled in just the same way he had done to me over the last few days. The kids already had the window down and were happily waving their reply. The second car got the same (37) from the crossing guard, and the driver, a stiff-looking businessman, gave a brief, almost awkward wave back. Each following car of kids on their way to school (38) more heartily.

Every morning I continued to watch the man with interest. So far I haven’t seen anyone (39) to wave back. I find it interesting that one person can make such a difference to so many people’s lives by doing one simple thing like waving and smiling warmly. His (40) armed the start of my day. With a friendly wave and smiling fade he had changed the feelings of the whole neighbourhood.

32（）。

A. false

B. shy

C. apologetic

D. bright