叉虫益和星虫在个体发育中皆具有似()的幼虫期。A、浮浪幼虫 B、两囊幼虫 C、担轮幼

题型:单项选择题

问题:

叉虫益和星虫在个体发育中皆具有似()的幼虫期。

A、浮浪幼虫

B、两囊幼虫

C、担轮幼虫

D、牟勒氏幼虫

考点:生物学环节动物门环节动物门题库
题型:单项选择题

阅读理解。

     Usually, when your teacher asks a question, there is only one correct answer. But there is one question that

has millions of current answers. That question is"What's your name?" Everyone gives a different answer, but

everyone is correct.

     Have you ever wondered about people's names? Where do they come from? What do they mean?

      People's first names, or given names, are chosen by their parents. Sometimes the name of a grandparent or

other member of the family is used.

     Some parents choose the name of a well-known person. A boy could be named George Washington Smith;

a girl could be named Helen Keller Jones. Some people give their children names that mean good things. Clara

means "bright"; Beatrice means"one who gives happiness"; Donald means"world ruler"; Leonard means"as

brave as a lion".

     The earliest last names, or surnames, were taken from place names. A family with the name Brook or

Brooks probably lived near brook (小溪); someone who was called Longstreet probably lived on a long, paved

road. The Greenwood family lived in or near a leafy forest.

      Other early surnames came from people's occupations (职业). The most common occupational name is

Smith, which means a person who makes things with iron or other metals. In the past, smiths were very

important workers in every town and village. Some other occupational names are: Carter-a person who owned

or drove a cart; Potter -a person who made pots and pans (罐和锅).

      The ancestors (祖先) of the Baker family probably baked bread for their neighbors in their native village.

The Carpenter's great-great-great-grandfather probably built houses and furniture (家具).

     Sometimes people were known for the color of their hair or skin, or their size, or their special abilities.

When there were two men who were named John in the same village, the John with the gray hair probably

became John Gray. Or the John was very tall could call himself John Tallman. John Fish was probably an

excellent swimmer and John Lightfoot was probably a fast runner or a good dancer.

     Some family names were made by adding something to the father's name. English-speaking people

added -s or -son. The Johnsons are descendants of John; the Roberts family's ancestor was Robert. Irish and

Scottish

people added Mac or Mc or O. Perhaps all of the MacDonnells and the McDonnells and the O'Donnells are

descendants of the same Donnell.

1. Which of the following aspects do the surnames in the passage NOT include?

A. Places where people lived.

B. People's characters.

C. Talents that people owned.

D. People's occupations.

2. According to the passage, the ancestors of the Potter family most probably _______.

A. owned or drove a cart

B. made things with metals

C. made kitchen tools

D. built houses and furniture

3. Suppose an English couple whose ancestors lived near a leafy forest wanted their new-born son to

    become a world leader, the baby might be named _______.

A. Beatrice Smith

B. Leonard Carter

C. George Longstreet

D. Donald Greenwood

4. The underlined word "descendants" in the last paragraph means a person's _____. 

A. 后代

B. 亲朋好友

C. 同事同伴

D. 祖先

题型:单项选择题

速动资产等于( )。

A.流动资产—流动负债

B.流动资产—存货

C.流动资产—待摊费用

D.流动资产—存货—待摊费用

题型:单项选择题

对外汉语教学的全部教学活动可概括为总体设计、教材编写、 、成绩测试等四大环节。

题型:单项选择题

财务内部收益率是反映项目()能力的()指标。

A.获利,静态

B.获利,动态

C.偿债,静态

D.偿债,动态

题型:单项选择题

设有以下语句:
int a=1, b=2, c;
c=a^(b<<2);
执行后,c的值为( )。

A) 6
B) 7
C) 8
D) 9

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