有A、B两个电阻，它们的伏安特性曲线如图所示，从图线可以判断A、电阻A的阻值大于电阻BB、电阻A的阻值小于电阻BC、电压相同时，流过电阻A的电流强
下列关于等高线的说法，正确的是（ ） A．等高线的高度是相对高度 B．等高线闭合的地方是山顶 C．等高线密集的地方，坡度较大 D
The students at Sandy’s high school were badly shaken by the news that a classmate had 36 himself. The suicide note read: “It’s hard to 37 when nobody cares if you die.” Glen, a teacher,
Beggars are often seen sitting under blankets with heads bowed as people pass them by in Cambridge’s market center. Some ask passers-by for change and some just sit and wait to be given money. A few
读下图，回答正确表示某气压系统的图是 A．① B．② C．③
如图表示某植物的非绿色器官在氧浓度为a、b、c、d时，CO2释放量和O2吸收量的变化。下列相关叙述正确的是 A．氧浓度为a时，最适合贮藏该植物器
—You’d better ______ work too hard like this.—I see. You mean working too hard makes one tired and ill.A. not B. not to C. don’t D. won’t
C．－3 D．
