. Since last year, the global economic slowdown ________ in many countries. It is expected that the world economy will not recover until the end of 2010.
A．is spreadingB．spreadC．had spreadD．has been spreading
D
考查時態(tài)。句意：自從去年以來，全球經(jīng)濟減速正在許多國家蔓延。預(yù)期直到2010年底世界經(jīng)濟才能恢復(fù)。結(jié)合語境而可知上文描述的是過去正在進(jìn)行的動作對現(xiàn)在的影響，故用過去完成進(jìn)行時態(tài)，選D。
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