3月21日6时整,甲地(40°N,45°E)正好日出。此时一艘轮船航行于太平洋上

题型:选择题

问题:

3月21日6时整,甲地(40°N,45°E)正好日出。此时一艘轮船航行于太平洋上。经过10分钟后,该轮船越过了日界线,这时轮船所在地的区时可能是[ ]

A.3月21日14时50分

B.3月21日15时10分

C.3月22日15时10分

D.3月22日14时50分

考点:地球自转的地理意义
题型:选择题

下列有机物的命名正确的是

A.3,3-二甲基-4-乙基戊烷

B.3,3,4-三甲基己烷

C.3,4,4-三甲基己烷

D.2,3-三甲基己烷

题型:选择题

While reading a book in English, every few lines of text, you run across a word or two that you don’t know. You look up every new word in the dictionary. Bad move. All that does slow you down. Even electric or CD –ROM dictionaries can get in the way of your reading progress. A dictionary is like a road map. It can help you if you get lost and point you in the right direction. But if you stop to look at the “map” each time you take a step, you’ll get nowhere fast.

On your English learning “journey”, a dictionary can be a helpful “travel companion ”--if it is not overused. To help you start thinking in English, use an English-to-English dictionary. Otherwise, you will always depend on your native language and end up translating in your head.

A good dictionary can help you do more than just find the meaning of a word. It can help you verify (test and check) spelling, check word forms and grammar usage, find example sentence and learn pronunciation. Some dictionaries even provide exercises to teach you how to use their resources (资源) .

Take time to get to know your dictionary. Learn the pronunciation symbols (符号). Understand what the abbreviations (缩写字) mean. Try to master the important grammar rules. Look for charts, diagrams and lists that might be useful in the future. You will discover how helpful it can be to make friends with your dictionary. And as they say, “A friend in need is a friend indeed.”

小题1:Why do we need a good English-to-English dictionary?

A.Because it is a good friend.

B.Because it can help us to find the right direction if we get lost.

C.Without it we’ll always depend on our native language and end up translating in our head.

D.Because it can help us to start thinking in English and in Chinese.小题2:The underlined word “that ” in the last paragraph refers to __________.

A.pronunciation symbols and grammar rules

B.abbreviations and usage for grammar rules

C.the meaning of a word, spelling and grammar usage

D.charts, diagrams and lists小题3:According to the passage , which statement can lead you to believe?

A.The more you use a dictionary, the better you can understand the article.

B.The more you use a dictionary, the faster you may read.

C.The more you use the resources in a dictionary, the more you can benefit (受益) from it.

D.The better a dictionary is, the more expensive it is.

题型:选择题

下列关于溶质类属和溶液的名称正确的是(   )

A.混合物、碘酒

B.单质、液态氢

C.化合物、生理盐水

D.氧化物、白酒

题型:选择题

肾动脉起源于腹主动脉,位于肠系膜上动脉的()

A.足侧

B.腹侧

C.头侧

D.背侧

题型:选择题

气源管道的管径大小是根据压缩空气的最大流量和允许的最大压力损失决定的。

更多题库