小亮在作图时，画错了一个地方，用橡皮轻轻的擦，没有擦干净，然后他稍微使点劲就擦干

面对新同学、新老师、新环境，你在高兴的同时也可能会感到有点孤单。此时最好的选择应该是

A．拿新学校的不足与原来的小学比较

B．积极结交新同学，珍视新友谊

C．时刻保持警惕，提防同学取笑

D．等新同学主动来结交时再交往

非结构性问卷的问题形式包括（ ）。

A．填空式和问答式

B．选择式和判断式

C．划记式和论述式

D．是否式和问答式

The public decides to decrease its holdings of currency and to increase its holdings of checking account funds by an equal amount. If the Federal Reserve does not take any offsetting actions, how will the money supply be affected （）

A. The money supply will decrease.

B. Although the action does not directly affect the money supply, it will reduce the excess reserves of banks and tend to indirectly reduce the money supply.

C. The action does not directly affect the money supply; it will increase the excess reserves of banks and tend to increase the money supply because banks may expand their loans.

下列措施中不能防止大体积混凝土产生裂缝的是______。

A．选用水化热低的水泥

B．降低水泥用量

C．选用细砂配制混凝土

D．降低浇筑速度

简述维持型人际关系的特点。