精英家教网 > 高中英语 > 题目详情

7、Black holes _____ not be seen directly, so determining the number of them is a tough task.

A. can                   B. should                         C. must                      D. need

7、A

请在这里输入关键词:
相关习题

科目:高中英语 来源: 题型:

Black holes _____ not be seen directly, so determining the number of them is a tough task.

A. can                   B. should                         C. must                      D. need

查看答案和解析>>

科目:高中英语 来源: 题型:

Black holes _____ not be seen directly, so determining the number of them is a tough task.

A. can     B. should      C. must     D. need

 

查看答案和解析>>

科目:高中英语 来源: 题型:

Black holes ________ not be seen directly, so determining the number of them is a tough task.

  A.can B.should C.must D.need

 

查看答案和解析>>

科目:高中英语 来源: 题型:

Black holes _____ not be seen directly, so determining the number of them is a tough task.

  A. can    B. should      C. must         D. Need

 

查看答案和解析>>

科目:高中英语 来源: 题型:014

(2006·上海)

Black holes ________ not be seen directly, so determining the number of them is a tough task.

[  ]

A.can
B.should
C.must
D.need

查看答案和解析>>

科目:高中英语 来源:同步题 题型:单选题

Black holes can not be seen directly, so determining the number of them is a___________ task.  
[     ]
A. rough  
B. strict  
C. tough  
D. firm

查看答案和解析>>

科目:高中英语 来源: 题型:单选题

Black holes ________ not be seen directly,so determining the number of them is a tough task.


  1. A.
    can
  2. B.
    will write
  3. C.
    must
  4. D.
    need

查看答案和解析>>

科目:高中英语 来源:英语外研必修五设计 外研版 题型:016

Black holes ________ not be seen directly,so determining the number of them is a tough task.

[  ]
A.

can

B.

will write

C.

must

D.

need

查看答案和解析>>


同步练习册答案