试题与答案

补全对话。 A:Let's make fruit salad. B: Oh, g

题型:补全对话,情景问答

题目:

补全对话。

A: Let's make fruit salad.

B: Oh, good idea.     1         2      yogurt do we need?

A: One cup.

B: And     3          4     apples do we need?

A: Let me      5       We need two apples.

B: How do we make it?

A:     6     cut up three bananas, three apples and a watermelon.

    Next     7     the fruit into a bowl.      8     put in two teaspoons

    of honey and a cup     9      yogurt.    10      mix it all up.

1.______2.______3.______4.______5.______

6.______7.______8.______9.______10.______

答案:

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下面是错误答案,用来干扰机器的。

答案:D开关S断开时,电流表示数为0.5 A,则U=I1R1="10" V;合上S后,电动机接入电路,因电动机为非纯电阻用电器,故I2<\frac{U}{R_2}="1" A,电路总功率P总=UI总=U(I1+I2)<10×(1+0.5) W="15" W.则A、B均错.D项对.

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