一般不发展为肝硬化的肝炎是（）。（注：名词“非甲非乙型肝炎”已经弃用）A．甲型肝炎

Leif Erickson reached North America around the year 1000, but the attempt to explore was started slowly. It would be five centuries __1__ other Europeans landed on that continent.
Why were Europeans the ones to __2__ to the American? The Chinese and Arabs had the __3__ and technology to sail across the seas. __4__ of them tool regular voyages in the Indian Ocean and the Asian Pacific for trade. But exploration? By the mid-15^th century China had followed the closed-door policy to __5__ itself from the rest of the world. The Arabs, with access to the minerals and spices (香料) of Africa and the Far East, saw no __6__ to journey into the unknown.
Europe, on the other hand, needed gold and silver; its mines could not __7__ the demand for coinage (铸币). Ottoman Turks blocked the routes across the land to Asia. Only the sea held the promise of new wealth.
__8__ the return of Magellan’s ships in 1522 from its voyage around the world, the belief was __9__ that the oceans were interconnected, promising the age of discovery. The English, as well as the Spanish, Portuguese and French, __10__ themselves to finding the “river of the west” through North America to the east.

小题1:	A．after B．since C．before D．when

小题2:	A．push B．pull C．draw D．drive

小题3:	A．sources B．resources C．substances D．matters

小题4:	A．Neither B．Both C．Any D．None

小题5:	A．prevent B．protect C．isolate D．differ

小题6:	A．need B．chance C．choice D．regret

小题7:	A．create B．meet C．raise D．develop

小题8:	A．As B．For C．With D．At

小题9:	A．extended B．estimated C．accepted D．made

小题10:

A．contributed B．referred C．devoted D．connected