Visitors can stand on the top of Oriental Pearl Television Tower, from ________ they can have a better view of the city of Shanghai.
A.that B.when C.what D.which
President Xi Jinping’s speech at the opening ceremony of the First China International Import Expo was ________ welcomed by participants at the event.
A.quietly B.frequently C.widely D.gradually
— What’s wrong? You look really stressed out.
—I ________ the whole week preparing for my graduation paper.
A.work B.have worked
C.have been working D.worked
______the damage is done, it will take many years for the farmland to recover.
A.Until
B.Unless
C.Once
D.Although
If you have any doubts about your health, you’d better______ your doctor at once.
A.convince B.consult
C.avoid D.affect
Skills like critical thinking and analysis ________ be found on the Internet, because they must be acquired in the context of facts.
A.can’t B.needn’t C.mustn’t D.shouldn’t
