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【简答题】
南通至南京高速公路的路基工程分段招标，市路桥公司中标承包了一段路基工程，进入施工场地后，所挖筑路基的长度y（m）与挖筑时间x（天）之间的函数关系如图所示，请根据提供的信息解答下列问题： （1）请你求出： ①在0≤x＜2的时间段内，y与x的函数关系式； ②在x≥2时间段内，y与x的函数关系式。 （2）用所求的函数解析式预测完成1620m的路基工程，需要挖筑多少天？
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【简答题】完形填空。 In 1977, a dead author of detective stories saved the life of a 19-month-old baby in a most unusual way. The author was Agatha Christie, one of the most successful writers of detective stories i...
【单选题】The author feels less unrestrained when talking about animal emotions because ______.
A.
most animals have emotions as strong as human beings do
B.
most colleagues are on his side when talking about animals
C.
animals usually have mixed, and even conflicting emotions
D.
the view of animal emotions has become much more popular
【简答题】给下列的词组选择正确的汉语意思。 ( ) 1. brown eyes ( ) 2. black hair ( ) 3. green grass ( ) 4. tall tree ( ) 5. pretty girl A. 美丽的女孩 B. 绿色的草 C. 高的树 D. 黑色的头发 E. 棕色的眼睛
【简答题】选择正确的汉语意思。 ( ) 1. You're second. ( ) 2. How tall are you? ( ) 3. She is tall and he is taller. ( ) 4. She is taller and he is shorter. ( ) 5. Stand on your feet, please. A. 请用脚站着。 ...
【单选题】My sister _____ as a secretary in her company for three years and now she _____ to the manager of the sales department.
A.
served; has been promoted
B.
had served; has been promoted
C.
has served; has promoted
D.
was serving; has promoted
【单选题】金黄色葡萄球菌在血平板上的菌落特征是 -- ?
A.
金黄色菌落 + 绿色溶血环；
B.
金黄色菌落 + 透明溶血环；
C.
柠檬色菌落 + 绿色溶血环；
D.
白色菌落 + 绿色溶血环
【单选题】In commenting on O' Neill's record as Treasury Secretary, the passage seems to indicate that ______ .
A.
O'Neill has failed to use his power well
B.
O'Neill's policies were not well received
C.
O'Neill has been consistent in his policies
D.
O'Neill is skeptical about the package he's approved
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