- I was worried about this out-dated equipment. - ________ 选择一项： a. Yeah, it may bring a health hazard b. You.re so lucky. c. It.s too old.

- I was worried about this out-dated equipment.

- ________

选择一项：

a.
Yeah, it may bring a health hazard

b.
You.re so lucky.

c.
It.s too old.

出自：国家开放大学理工英语3

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