二，单项填空（共15小题，每小题1分）
21,It is ______ great concern for the public that constant stress puts students’health at _______ risk.
A.the ; a B a; the C. a; 不填 D不填 ; the
22.The meeting’s on the 12th, and I have ______ the date in your diary.
A.put down B.put up C.held out D .turned away
23.I lent him ten magazines,______ are more wonderful than you can imagine.
A. most of which B most of them C. and most of which D.most of that
24.The medical team sent to the flood-stricken area______ 30 members.
A.made up B. was made up C. consisted of D. was consisted of
25 Many of them turned a deaf ear to his advice,________ they knew it to be valuable.
A,as if B, now that C, even though D, so that
26,She ought to stop working ; she has a headache because she _____ too long.
