用杏仁面制作象形水果时，一般将制品表面粘上一层（），以增加制品的美观。
A、砂糖
B、巧克力
C、糖粉
D、蛋液
参考答案：B
用所给单词的适当形式填空。
1.I ___ __ (be) busy yesterday.
2. It's time___ _ (go) to bed.
3. He __ __ (have) some bread for breakfast this morning.
4. He did some __ ___ (read) last night.
5. My mother ___ __ (clean) the house the day before yesterday.
电阻温度传感器有两种类型，分别是（）型和半导体型。
A.传导
B.传热
C.反馈
D.循环
