已知：Z=4+j（6-3）Ω，则该负载性质为（）。A.感性 B.容性 C.阻性 D.

阅读短文，选择正确答案。

                                                                My school activities

     I'm Sam. I'm a student at an American school. At my school, we can have a lot of activities. If you like

drama, you can join in the autumn plays, winter music dramas or other activities. There are also many sports

games at our school. There are men's and women's soccer, men's tennis, men's table tennis and women's

volleyball.

     We also need to do some voluntary (志愿者) work once a week. We take a bus to an old man's home, a

hospital or some other places to help others. Parents also take part in (参加) school activities with their children

sometimes. They can take part in their children's sports games. We have a game called Parents' Night. At those

nights, students thank their parents for their help. We give a flower or a card to our parents. Parents also come

for the plays, students' fashion shows and other activities.

1. Where is Sam from? [ ]

A. China.

B. America.

C. England.

D. Australia.

2. There isn't ________ at Sam's school. [ ]

A. men's soccer

B. women's soccer

C. men's tennis

D. women's tennis

3. The students go out to do some voluntary work ________. [ ]

A. once a week

B. once a year

C. every five days

D. every two days

4. At Parents' Night, ________ thank their mothers and fathers. [ ]

A. the teachers

B. the boys

C. the girls

D. the students

5. Which of the following activities is NOT talked about? [ ]

A. Sports games.

B. Fashion show.

C. Drama.

D. Making model planes.

结合语境，将下列句子填入横线处，最恰当的一组是[ ]

　　近了，近了，我倾听到了春天的脚步声。燕子在呢喃，         ，潺潺流水捎来了春天的讯息。不知从哪里          ，接着，就像早约好似的，树们绽开新芽，碧草绿满山坡，到处是诱人的绿。

A.大雁掠过蓝天           溜来一抹新绿        

B.大雁掠过蓝天           长出一片绿色

C.蓝天上掠过一群大雁     长出一片绿色  

D.蓝天上掠过一群大雁     溜来一抹新绿

It will be three days __________he ________back from his home town..

A．when; will come

B．after; will come

C．since; comes

D．before; comes

煤炭是世界储量最丰富的化石燃料，其储量在世界能源总储量中占90%，按目前规模开采可持续200年左右。据上个世纪80年代初世界能源会议等组织的资料，世界煤资源的探明储量为3.5万亿吨，约占总地质储量的24.5%。煤炭的种类可分为硬煤、褐煤和泥煤等。泥煤的数量相对较少，硬煤占总储量的74.2%，褐煤占23.7%。据统计，拥有煤炭资源的国家大约有70个左右，其中储量较多的国家有中国、俄罗斯、美国、德国、英国、澳大利亚、加拿大、印度、波兰和南非地区。

我国的煤炭资源预测地质储量，达45000亿吨以上，但能作为规划设计的实际依据的探明储量，特别是可供建井用的精查储量却很低，累计探明储量超过7000亿吨，其中精查储量为17.5亿吨。山西省的煤炭储量2000多亿吨居全国第一，内蒙古居第二位。煤炭储量超过200亿吨的省、自治区有陕西、贵州、宁夏、安徽等。

我国在已探明的储量中，精查储量仅占世界煤炭总储量的（）。

A．0.011

B．0.012

C．0.012%

D．0.011%

因患检疫传染病而死亡的尸体，经过卫生处理可以将尸体移运。 ( )