听力原文：W: I think we ought to turnroundnd hed bck down the tril.M: Tired,fter j听力原文：W: I think we ought to turnroundnd hed bck down the tril. M: Tired,fter just few miles W: Nottll, but thosere cumulonimbus clouds building up there. M: So, I don’t relly cre if it gets cloudy. The sun’s been pretty strong. W: Right, but those clouds men thunderstorm, lots of rinnd sometimes even hil with those kinds of clouds. M: Tht doesn’t sound so gret, but I thought tht those cumulus were fir wether clouds. W: Youre thinking of cumulus clouds I bet. Thosere definitely cumulonimbus. M: How on erth did you ever herll tht, from meteorologicl course W: I’mn English mjor, but growing up on frm, you lern lotbout the wether, M: You convince me, let’s turn bck,nd mybe on the wy down, you cn give lesson on clouds. W: Sure thing, but let’s get going. Where does the converstion tke plce On mountin tril. B．In clssroom. C．t wether sttion. D．t plnetrium.
A．On a mountain trail．
B．In a classroom．
C．At a weather station．
D．At a planetarium．
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When the Workers Union went on a strike, the country’s air traffic was .
