18
A: They are extremely accurate.
B: They are expensive to make.
C: They were first made in space.
D: They were invented in the 1970s.
A: They are extremely accurate.
B: They are expensive to make.
C: They were first made in space.
D: They were invented in the 1970s.
举一反三
- 20171201CET-4 Listening comprehensionSection C 18 A: They are extremely accurate. B: They are expensive to make. C: They were first made in space. D: They were invented in the 1970s.
- If computers ______, many problems on space flight could not have been solved. A: had not been invented B: are not invented C: were not invented D: have not invented
- The enemy ______ trouble.(1.0) A: constantly make B: were constantly making C: were making constantly D: were being made
- A lot of ______ (fortunate) mistakes were made at the first meeting.
- · You will hear the conversation twice. Which statement is NOT true about bananas A: Bananas were among the first plants ever to be domesticated. B: Bananas are an extremely nourishing food. C: Bananas were first domesticated in England.