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【简答题】
已知函数 ， . （1）若 在 处取得极值，求 的极大值； （2）若在区间 上 的图像在 图像的上方（没有公共点），求实数 的取值范围.
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【单选题】- Would you please help me ______, Wang Fei? This question is too hard for me. - OK. Let me try.
A.
after
B.
up
C.
Out
D.
with
【简答题】完形填空。 Mr. Green worked in an office. Every morning he had __ 1 __ with his family at half past seven, __ 2 __ his newspaper,drank a cup of coffee and then __ 3 __ his house at eight o'clock and went t...
【简答题】在 D 盘中新建文件夹“班级资料”,并在文件夹“班级资料”中新建三个子文件夹“班级成员信息资料”、“班级活动资料”和“班级成绩资料”。
【单选题】—Excuse me, what's the time, please? —Let me see. ________. [ ]
A.
Oh, I must go to school
B.
Let's go and play s
C.
It's about four thirty
D.
Here you are
【简答题】Tom is an English boy. Now he is in Beijing with his parents and his two sisters. Every morning he has breakfast at 7:00. Then he goes to school at 7:30. His first class starts at 8:00. In the morning...
【单选题】(7) Every morning he takes a ________ to his office.
A.
20 minutes walk
B.
20 minute’s walk
C.
20-minutes walk
D.
20- minute walk
【单选题】某公司根据随机抽取的100名员工年龄的调查数据，计算得出了公司全部员工的平均年龄，这种分析数据的方法属于（ ）。
A.
描述统计
B.
推断统计
C.
类比统计
D.
相关分析
【简答题】用所给词的适当形式填空。 1. He _____ (go) to school by dike every morning. But this morning he _____ (go) by bus. 2. 'Do you like _____ (drink) tea?''Yes,I do.' 3. I'm sorry. I can't. I have to _____ (help) my mo...
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