13.
A: whereas
B: until
C: for
D: if
A: whereas
B: until
C: for
D: if
举一反三
- 13. A: whereas B: until C: for D: if
- We're going to keep looking （） we find the house of our dreams. A: whereas B: unless C: because D: until
- Knowledge that is patented is a A: public good, whereas knowledge that is not patented is a common resource. B: private good, whereas knowledge that is not patented is a club good. C: common resource, whereas knowledge that is not patented is a private good. D: club good, whereas knowledge that is not patented is a public good.
- Itwas_____lastyear______hecametorealizetheimportanceoflearningEnglish. A: until;before B: that;until C: until;that D: before;until
- 我国将标准物质分为（）类（）级。 A: 13，二 B: 10，三 C: 11，二 D: 13.三