______ you ought to do is to see a doctor. A: How B: B．What C: C．Which D: D．That

The problem is_______ he has enough time. A.if B.whether C./ D.that

The cakes taste delicious．Could I have another _______? A: A．one B: B．it C: C．this D: D．that

She heard a terrible noise,________ brought her heart into her mouth. A: A.it B: B.which C: C.this D: D.that

What a pity! My new computer doesn’t work．________ must be something wrong with it. A: A．It B: B．There C: C．This D: D．That

All group members read the instructions first before you act,____you can find[br][/br] below the title.[br][/br] A .what B.when C.which D.That

如果ξ与η不相关，则（）。 A: D（ξ+η）=Dξ+Dη B: D（ξ-η）=Dξ-Dη C: D（ξη）=Dξ·Dη D: E（ξη）=Dξ·Dη

已有定义intd=-2;，执行以下语句后的输出结果是：printf('*d(1)=%d*d(2)=%3d*d(3)=%-3d* ',d,d,d,d);printf('*d(4)=%o*d(5)=%7o*d(6)=%-7o* ',d,d,d,d);printf('*d(4)=%x*d(5)=%6x*d(6)=%-6x* ',d,d,d,d);

圆柱螺旋弹簧的旋绕比C是（） A: d/D B: d/D C: D/d D: D/d

已有定义int d= –2；执行以下语句后的输出结果是。 printf(" * d(1) =%d * d(2)= %3d * d(3) =% –3d * "，d，d，d)； printf(" * d(4) =%d * d(5)= %7d * d(6) =% –7d * "，d，d，d)；