单项选择题

Monthsgo we siled ten thousnd milescross this open se, which ______ thePcific,nd we met no

Monthsgo we siled ten thousnd milescross this open se, which ______ thePcific,nd we met no storms.ws clled B．is clled C．hd been clled D．hs been clledA．was calledB．is calledC．had been calledD．has been called

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单项选择题

Which populr exercise do the experts suggest Cycling.B．Swimming.C．Wlking.Which populr exercise do the experts suggest Cycling. B．Swimming. C．Wlking.

A．Cycling．B．Swimming．C．Walking．

问答题

There are numerous and reliable ways by which one can measure the impact of employment on

student achievement, and we used several in our research （） Meaning: There are many reliable methods to study how work affects students’ school performance, and we used a few of the methods in our research.

答案：正确