抗人禽流感病毒药物主要包括（ ）和（ ）两大类。

某食堂发生以呕吐为主要症状的食物中毒，在餐具和厨房炊具中没有培养出肠道致病菌，但在炊事人员的手上查出了化脓性感染灶。

该致病菌可能是()

A．空肠弯曲菌

B．产气荚膜梭菌

C．金黄色葡萄球菌

D．肠炎沙门菌

E．鼠伤寒沙门菌

高致病性禽流感III级预警基本指标为（）.

A.监测到健康带毒家禽

B.相邻市发生疫情

C.或相邻国家或省发生疫情

D.监测到候鸟或野鸟带毒或疑似病例，区域内不能有效保护禽群比例高于30%

若公司发行面额为300万元的10年期债券，票面利率为10%，发行费用率为5%，发行价格为600W元，公司所得税为30%，则该债券成本为( )。

A．3.08%

B．3.64%

C．4.57%

D．4.60%

Are you carrying too much on your back at school? I’m sure lots of children of your age will say “Yes”. Not only the students in China have this problem, but children in the United States also have heavy school bags.

Doctors are starting to worry that younger and younger students are having back and neck problems as a result of school bags being too heavy for them.

“It’s hard for me to go upstairs with my bag because it’s so heavy,” said Rick Hammond, an 11-year-old student it the US.

Rick is among students who have common school bags with two straps(带子)to carry them, but many other students choose rolling(有滚轮的)bags.

But even with rolling bags, getting up stairs and buses is still a problem for children. Many of them have hurt their backs and necks because of the heavy school bags.

But how much is too much? Doctors say students should carry no more than 10% to 15% of their own body weight(重量).

Scott Batch, a back doctor, said children under Grade 4 should stay with 10%. But it is also important that older children don’t stay with over 15%, because their bodies are still growing.“

Children are losing their balance(平衡)and falling down with their school bags,” he said.

Parents and teachers are starting to tell children to only take home library books they will be reading that night. Some teachers are using pieces of paper or thin workbooks for students to take home.

One of the best answers is, as some children said, to have no homework at all!

小题1:From the passage we can know that     .

A．only children in China carry too heavy school bags

B．children in other countries don’t carry too heavy bags

C．both children in China and the US carry too heavy school bags

D．only children in the US carry too heavy school bags小题2:Children feel it hard for them to go upstairs because      .

A．they are too young

B．their school bags are too heavy

C．they don’t know how to go upstairs

D．their parents don’t always go upstairs with them together小题3:If a child carries a heavy school bag,      .

A．his back and neck will be hurt

B．his head and arms will be hurt

C．his hands will be hurt

D．his feet will be hurt小题4:According to the doctor, Scott Batch, if a child in Grade 5 weighs(重)about 30 kilos, the school bag he carries should not be over      .

A．5 kilos

B．3 kilos

C．5.5 kilos

D．4.5 kilos小题5:Some students think the best answer to this problem is that     .

A．they should have a little homework to do after they get home

B．their teachers had better not ask them to do any homework

C．they should only take home library books they will read that night

D．they should use thin workbooks instead of think ones

下列行为中，属于著作权法所称“合理使用”的有（）。

A.在书评中适当摘引被评图书的内容

B.期刊转载或摘编互联网上发表的作品

C.把已经出版的英文作品翻译成维吾尔文出版

D.拍摄城市绿地中陈列的雕塑作品

E.把已出版的图书改成盲文出版