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【单选题】
有一位同学做根尖有丝分裂实验，在显微镜中观察到的图像如图所示。造成这种情况的原因可能是 ①取材位置不合适 ②取材时间不合适 ③制片时压片力量不合适 ④时间不合适 ⑤视野选择不合适 [ ]A.
①③④
B.
①②⑤
C.
②⑤
D.
②③
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举一反三
【单选题】What is Edgar Allen Poe by profession according to the passage?
A.
He is a cosmologist.
B.
He is a cosmogonist.
C.
He is a university instructor.
D.
He is a famous poet.
【单选题】运行以下的main()方法，结果是？（ ）1 public static void main(String[] args)2 {3 String myString;4 int x = 100;5 6 if (x 100) myString = "x is greater than 100";8 System.out.println(myString.length());9 }
A.
编译时报出错误提示信息“变量myString没有被初始化”
B.
编译通过
C.
编译未能通过。但如果变量myString在第8行前的代码中被初始化，代码可以编译通过，运行时可以输出字符串myString的长度
D.
以上都不对
【单选题】We can infer from the passage that the writer's attitude toward hospital policies is
A.
indifferent
B.
negative
C.
positive
D.
more than concerned
【单选题】What was Jack Scott in the passage? __________ .
A.
He was a pilot
B.
He was a policeman at the airport
C.
He was an engineer
【单选题】The young man was so bashful that he did not speak to the pretty girl.
A.
haughty
B.
shy
C.
indifferent
D.
upset
【简答题】声明两个字符串 string myString1 = "Hello"; string myString2 = "hello"; 通过相等运算符 == 来比较它们是否相等 。
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