In Zurich,a leading canton in the Swiss Confederation,it has been proposed to teach one foreign language—English—in primary schools.This would represent a change(C1)______Zurichs elementary school kids now study English and French.Voters will decide whether French will be(C2)______. Some educators believe that two foreign languages are too much for kids.Supporters of one foreign language believe that kids fail to reach strong(C3)______in German, the mother tongue for schoolchildren in Zurich. In fact, Zurich kids speak Swiss German, which is(C4)______an oral language.In school they have to learn standard German, which in some ways is a foreign language.(C5)______you add them all together Zurich kids are learning four languages. All of Switzerland will watch what Zurich voters decide because Zurich is an influential canton and others may(C6)______.Yet some German-speaking cantons have already decided to reject plans to reduce the number of foreign languages. Regardless of what happens, Swiss kids will be fluent in more than one language which is a definite asset in todays(C7)______economy.It is also a definite asset in learning other subjects.Studies(C8)______in American universities have found that kids who study in dual-language schools outperform. their(C9)______who are taught in English only.Apparently, kids educated in two languages develop a mental agility that monolingual kids lack.Perhaps four languages are too many in elementary school,but two is not(C10)______at all.

(C1)

A．which

B．since

C．even if

D．now that