Our plan didn't get up the ground because

“我敢说我们日常所见的人中，他们之所以或好或坏，或有用或无用，十分之九都是他们的教育所决定的”，这一观点是出自洛克的（）。

A.《大教学论》

B.《教育漫话》

C.《爱弥儿》

D.《普通教育学》

将患肢放在对侧肩部时，肘不能贴胸，而肘部贴胸时，手不能放上肩部，称为

A．杜加征阳性

B．托马斯征阳性

C．川德伦伯征阳性

D．盖氏征阳性

E．加强试验阳性

设有员工关系Emp(员工号，姓名，性别，部门，家庭住址)，其中，属性(“性别”的取值只能为M或F；属性“部门”是关系Dept的主键。要求可访问“家庭住址”的某个成分，如邮编、省、市、街道以及门牌号。关系Emp的主键和外键分别是 (1) 。“家庭住址”是一个 (2) 属性。创建Emp关系的SQL语句如下：

CREATE TABLE Emp(

员工号CHAR(4),

姓名CHAR(10),

性别CHAR(1) (3) ,

部门CHAR(4) (4) ,

家庭住址CHAR(30),

PRIMARY KEY(员工号)

);

1（）

A．员工号、部门

B．姓名、部门

C．员工号、家庭住址

D．姓名、家庭住址

阅读理解。

     The bar-tailed godwit (斑尾鹬) has just broken its own record for the world's longest non-stop flight,

including humans in planes, according to a report made by Lund University Press. The bird can fly

non-stop for eight days, while the most impressive man-made airplane can only remain in the sky for 82

hours without a stop.

     The bar-tailed godwit's journey, from Alaska to New Zealand, covers over 6,835 miles. It completes

this trip twice a year, in autumn going to New Zealand, and in spring back to Alaska. The tireless bird

ends the trip without stopping once for food or rest. All other birds can only finish trips that are twice as

short as what the bar-tailed godwit travels.

     One reason for the bar-tailed godwit's success is that it has made the best use of its fuel, which is only 0.41 percent of its body weight over each hour of any given long flight. Hedenstrom, a professor from

Lund University, says, "This figure is extremely low compared with other birds." The bird also has a

special body shape that helps it fly easily. It stores body fat and protein to manage its trips. It also travels

fast, compared to other birds and animals.

     Many questions remain about this bird record holder that never gets lost in the air. Researchers

wonder whether it has an inside compass (指南针) that helps it to know the direction. Please watch how

beautiful bar-tailed godwits look as they come in for a landing, along with other birds.

1. For the flight from Alaska to New Zealand, the bar-tailed godwit _____.

A. doesn't need to stop to eat

B. is afraid of hot weather

C. seems very tired at last

D. should fly less than 7000 metres

2. The main reason why the bar-tailed godwit can break the record is that it ______.

A. eats little food every hour

B. has a special body shape

C. stores much water in its body  

D. has very light body weight

3. The last paragraph tells us that ________.

A. researchers have understood the bird very well

B. the bird has a very good sense of direction

C. there are still many who doubt the bird's ability

D. the bird has an inner compass

4. What is the text mainly about?

A. A bird that breaks the record for the longest non-stop flight.

B. Birds and airplanes that can fly over a long distance.

C. Reasons for the bar-tailed godwit's long-distance flight.

D. An introduction to long-distance flights of birds and humans.

综合安全技术

我国规定安全电压工频有效值的额定值为( )v。

A．50、42、24、12

B．42、36、24、12、6

C．45、36、22、11、5

D．380、220、110、50