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【简答题】
1 Who often have to decide whether they would prefer to travel by land, sea or air? 2 Is it easy to read on a train? 3 What lulls you to sleep? 4 Are long car journeys more, or less, pleasant than train journeys? 5 What do ferry trips and cruises offer? 6 What can you do when the sea is calm? 7 Do sea journeys always take a long time? 8 How many people are prepared to sacrifice holiday time for the pleasure of travelling by sea? 9 Why are many travellers intimidated by aeroplanes? 10 Is flying an expensive form of transport? 11 What can you settle back in to enjoy the flight? 12 What can you enjoy if the landscape is hidden from view? 13 Why is there nothing to prevent you from reading or sleeping? 14 How will you almost certainly arrive at your destination?
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【简答题】绿色植物在生态系统中属于______，蜜蜂在生态系统中属于______，营腐生生活的细菌和真菌在生态系统中属于______．
【单选题】下列的各对力中,是相互作用力的是
A.
悬绳对电灯的拉力和电灯的重力
B.
电灯拉悬绳的力和悬绳拉电灯的力
C.
悬绳拉天花板的力和电灯拉悬绳的力
D.
悬绳拉天花板的力和电灯的重力
【单选题】(1999 年广东高考题 ) 在生态系统中，下列各组生物属于生产者的是（ ）
A.
光合细菌、酵母菌
B.
．光合细菌、硝化细菌
C.
．乳酸菌、酵母菌
D.
．硝化细菌乳酸菌
【简答题】$n2=1298; while($n2!=0) { $n1=$n2%10; $n2=intval($n2/10); Echo $n1; } 输出结果是：A. 8921
【单选题】下列各对力中,是相互作用力的是 ( )
A.
悬绳对电灯的拉力和电灯的重力
B.
电灯拉悬绳的力和悬绳拉电灯的力
C.
悬绳拉天花板的力和电灯拉悬绳的力
D.
悬绳拉天花板的力和电灯的重力
【简答题】main( ) {int n1,n2; scanf(“%d”,&n2); while(n2!=0) {n1=n2%10; n2=n2/10; printf(“%d”,n1);}} 从键盘上输入 1298 ; 运行结果:_____________
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