A.Whether she goes to college
B.Whether does she go to college
C.If does she go to college
D.That if she goes to college

A.what his team’s weaknesses are
B.his team’s weaknesses are
C.that his team’s weaknesses are
D.that are his team’s weaknesses

A.Why isn’t he here today
B.Why isn’t he here today?
C.Why he isn’t here today
D.Why he isn’t here today?

A.
B.
C.
D.

A.
B.
C.
D.

A.
B.
C.
D.

A.Al, Mg, Na, K.
B.Al, Na, Mg, K.
C.K, Na, Mg, Al.
D.Mg, K, Na, Al.

A.dùng nước phun vào đám cháy, dùng chăn ướt.
B.dùng cát, phun nước vào đám cháy.
C.dùng đất, cát phủ kín đám cháy, dùng bình chữa cháy.
D.dùng chăn ướt, phun nước vào đám cháy.

A.CH3-O-CH3.
B.CH3-CH2-OH.
C.CH3-OH.
D.HO-CH2-CH(OH)-CH2OH.

A.Etlien.
B.Metan.
C.Cacbon đioxit.
D.Axetilen.