下列字段名中不合法的是A．当前 B．7个考生 C．dDc_111 D．DDD

想一想

阿拉伯半岛和长江中下游地区处在大体相同的纬度位置上，但气候差别却很大．阿拉伯半岛大部分地方是炎热干燥、人迹罕至的沙漠，自然条件极为严酷．而我国的长江中下游地区则降水丰沛，山清水秀，处处鱼虾肥美，稻米飘香，是著名的“鱼米之乡”．

（1）造成这两个地区气候差异的主要原因是什么？

（2）我国气候的特点是什么？举例说明它对我国的生产和生活产生的影响．______．

I was a single parent of four small children, working at a low paid job. Money was always tight, but we had a (1) over our heads, food on the table, clothes on our backs, and if not a lot, always (2) . Not knowing we were poor, my kids just thought I was (3) . I’ve always been glad about that.

It was Christmas time, and although there wasn’t (4) for a lot of gifts, we planned to celebrate with a family party. But the big (5) for the kids was the fun of Christmas (6) .

They planned weeks ahead of time, asking (7) what they wanted for Christmas. Fortunately, I had saved MYM120 for (8) to share by all five of us.

The big (9) arrived. I gave each kid a twenty-dollar bill and (10) them to look for gifts of about four dollars each. Then everyone scattered. We had two hours to shop; then we would (11) back at the "Santa’s Workshop"

Driving home, everyone was in high Christmas spirits, (12) my younger daughter, Ginger, who was unusually (13) She had only one small, flat bag with a few candies—fiftycent candies I was so angry, but I didn’t say anything (14) we got home. I called her into my bedroom and closed the door, (15) to be angry again. This is what she told me.

"I was looking (16) thinking of what to buy, and I (17) to read the little cards on the ’Giving Trees’. One was for a little girl, four years old, and all she (18) for Christmas was a doll. So I took the card off the tree and (19) the doll for her. We have so much and she doesn’t have anything. "

I never felt so (20) as I did that day.

20().

A.out 

B.over 

C.forward 

D.around

利用前药修饰原理，改善药物的吸收性能

A．匹氨西林
B．美法仑
C．可林霉素制备成棕榈酸酯
D．丙酸睾酮
E．贝诺酯

对于如下配置的X.25逻辑信道参数lic、hic、ltc、htc、loc、hoc，（）是正确的。

A、0；0；15；19；1024；0

B、1；7；12；10；0；0

C、0；0；1；16；16；1024

D、0；0；1；32；0；0