单项选择题
A.capital letters B.italics C.boldface print D.underlined letters
Chart legends printed in capital letters show that the ...
单项选择题Chart legends printed in capital letters show that the associated landmark is（）.
A.conspicuous B.inconspicuous C.a government facility or station D.a radio transmitter
After the passage of a cold front the visibility（）.A.do...
单项选择题After the passage of a cold front the visibility（）.
A.does not change B.improves rapidly C.improves only slightly D.becomes poor
Advise you（）engines．A.stopB.to stopC.stoppingD.stopped
单项选择题Advise you（）engines．
A.stop B.to stop C.stopping D.stopped
