患儿女，5岁，诊断为化脓性脑膜炎，经细菌培养确定为脑膜炎双球菌感染。此时应首选的抗生

某个婴儿不能消化乳类，经检查发现他的乳糖酶分子有一个氨基酸改换而导致乳糖酶失活，发生这种现象的根本原因是[ ]

A．缺乏吸收某种氨基酸的能力 

B．不能摄取足够的乳糖酶

C．乳糖酶基因有一个碱基替换了

D．乳糖酶基因有一个碱基缺失了

阅读理解。

Dear Amy,

     Is there any way I can get my mum to drive to school? She says walking is good exercise. My friend

Ann lives closer to the school, but her mum drives her to school. She is there in two or three minutes! Going

by car is the fastest way. She doesn't get wet if it is mining either. It takes me about ten minutes to walk to

school. If it rains, I'll get wet. It isn't fair} What shall I do?

                                                                                                                                        Mary

Dear Mary,

     I think you want me to feel sorry for you! But I don't feel sorry for you. I think you just want a few

more minutes in bed in the morning. Walking is good exercise! Lots of people don't get enough exercise,

so I think it is probably a good, idea for you to walk. You are going to school in the healthiest way. You

may not be the closest to the school, but you are close. A ten-minute walk to school each day will help to

keep you fit. Maybe you need an umbrella for wet days? I'm sure your mother has made sure you have a

good coat and. boots (雨靴) for wet days. Maybe you just don't want to use them because they are not in?

Try to think positively (积极地) about the walk! 

                                                                                                                                              Amy

1. In the first letter, Mary _________.

A. gives warnings

B. gives advice

C. asks for advice

D. expresses thanks

2. What will probably happen to Mary on wet days?

A. She'll get wet.

B. She'll go to school in her mother's car.

C. She'll get sick.

D. She'll drive to school.

3. How long does it take Mary to school?

A. 2 or 3 minutes' walk.

B. 10 minutes' walk.

C. 2 or 3 minutes' drive.

D. 10 minutes' drive

4. What does Amy tell Mary to do?

A. Have a talk with her mother.

B. Do a lot of exercise instead of walking every day.

C. Ask Ann and her mother for help.

D. Take the way of walking to school as it is good exercise.

5. What does "in" mean?

A. New.

B. Fashionable.

C. Tidy.

D. Traditional.

对不耐藏食品进行冷冻保藏时需保持冷链，叙述错误的是（）

A.从生产到消费的整个商业网应一直处于适宜的低温状态

B.与食品保存期限无关

C.与保存温度有关

D.与保存耐受量有关

E.与贮藏时间有关

《拘留所条例》已于2012年2月15日国务院第192次常务会议通过，并将于4月1日起施行。关于该条例，下列说法错误的有( )。

A．拘留所不得强迫被拘留人从事生产劳动
B．拘留所不得侮辱、体罚、虐待被拘留人或者指使、纵容他人侮辱、体罚、虐待被拘留人
C．拘留所应当凭拘留决定机关的拘留决定文书及时收拘被拘留人
D．需要异地收拘的，拘留决定机关应当出具相关法律文书和需要异地收拘的书面说明，而不必经异地拘留所主管机关批准

根据公司IT部相关标准，门店的宽带带宽标准计算公式是客房总数乘以基数，带宽基数为0.08。