在各大洲中,占世界国际贸易额比重最高的是[ ] A.亚洲 B.欧洲 C.北美洲

题型:选择题

问题:

在各大洲中,占世界国际贸易额比重最高的是[ ]

A.亚洲

B.欧洲

C.北美洲

D.南美洲

考点:世界地理概况
题型:选择题

阅读理解。

     When Julia Samberg eats her favorite food, she feels bad. She knows that chocolate can have a lot of fat

and sugar. But Julia says she loves chocolate so much-once she starts eating it, she can't stop.

     Julia isn't the only one who loves chocolate. It is a favorite food for people all over the world. People prefer

chocolate over ice cream, cakes, and cookies.

     The idea of eating chocolate didn't begin until the 19th century. Before that, people drank chocolate. The

habit began in Central America where the Aztecs drank bowls of chocolate to stay watchful. When the liquid

(液体) chocolate was brought to Spain in the 1500s, people thought it was medicine because it had a medicine

taste. In fact, the people who made chocolate into drinks were doctors.

     Then people discovered that mixing chocolate with sugar made a wonderful drink. King Ferdinand of Spain

loved this drink so much that he put out an order: anyone who talked about chocolate outside the court (法庭)

would be killed. For about 100 years, chocolate was a secret in Spain.

     Finally, people found out about chocolate, and it became a popular drink in Europe. Later, the Swiss mixed

milk and chocolate. Today, most Americans prefer milk chocolate, while most Europeans prefer dark chocolate.

     New research shows that chocolate is actually good for us." Chocolate has different kinds of vitamins,"

says a researcher in France." It has more than 300 different chemicals. One chemical works on the part of the

brain (大脑) that feels pleasure. People who feel good when they eat chocolate are actually healthier. Feeling

pleasure is important for health and can protect against illness."" Good chocolate doesn't have much fat or

sugar. You can enjoy it if you eat a little at a time!" says Tara Bearish, another chocolate lover.

1. _______    Doctors made chocolate into drinks.                         

         1         The Aztecs drank chocolate to stay watchful.               

2. _______    Chocolate was a secret in Spain for 100 years.             

3. _______    Liquid chocolate was brought to Spain from Central America.

4. _______     Sugar was mixed with chocolate to make a sweet drink.       

         7           Research has shown that chocolate is good for us.          

5. _______    The Swiss put milk into the chocolate mixture.             

题型:选择题

口服短效避孕药的主要作用机制为()

A.影响下丘脑-垂体-卵巢轴功能,抑制排卵

B.改变宫颈黏液性状,不利于精子通过

C.改变 * * 酸碱度,以杀灭精子

D.影响输卵管蠕动功能,影响精子与卵子结合

E.改变子宫内膜形态剂功能,影响受精卵着床

题型:选择题

脱引锭装置的作用是()。

A.便于存放引锭头

B.使引锭头与铸坯头部分开

C.便于铸坯头部切割

题型:选择题

经过焚烧炉烧掉的油渣、污油、油泥及其他固体垃圾可在任何海域排放。

题型:选择题

计算题:已知某油罐62℃时,油尺为3.53m,求该油罐的存油量。(ρ20=0.8950),3.530m对应体积为165975,f=0.0007)

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