______ I admit that all these problems are difficult, I don’t agree that they ca
题型：不详难度：来源：
______ I admit that all these problems are difficult, I don’t agree that they can’t be solved.| A．Unless | B．While | C．Until | D．Since |
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答案
| B |
解析
词义辨析。Unless除非……否则；While尽管；Until 直到；Since
自从，因为，由于。句意：尽管我承认这些问题都很难，但是我不认为它们不能被解决。所以选B。 |
举一反三
Quiet student ____he may be,he talks a lot about his favourite sport after class.
A if B as C since D when |
________ I’m __________ about the work. I’m not strong enough for it.| A．since…bored | B．however… exhausted | | C．Not that… particular | D．Now that…tired |
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A stubborn boy like him dosen’t learn from his mistakes______ he was punished badly.| A．if | B．when | C．since | D．unless |
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—Why do you look worried?
— Because what I am really concerned about is _____my friend can do me a favor or not..| A．although | B．whether | C．when | D．where |
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We thought it strange ________ Xiao Zhang did not take part in the sports meet of our school.| A．why | B．whether | C．when | D．that |
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