大叶性肺炎的痰液特点是（）
A.铁锈色痰
B.棕褐色痰
C.红色痰
D.粉红色泡沫痰
E.黄绿色痰
参考答案：A
He watches TV twice ____ three times a day.
A．and
B．or
C．from
D．to
Tim is in good shape physically () he doesn't get much exercise.
A. if
B. even though
C. unless
D. as long as
