Steam______into water when it touches a cold surface.A．shrinksB．contractsC．condensesD．comp

Large pipes or _____ are fitted between the steam and water drums to ensure good natural c

When a ruler is partly in a glass of water, it looks as if it______.A．breaksB．has brokenC．

We can infer from the passage that______.A．when put into water, nanaoparticles are highly

When the suffix______is added to a verb, it changes this verb into an adjective.A．-lessB．-

When the suffix______is added to a verb, it changes this verb into an adjective.A．-erB．-ne

_____, water turns into ice.A、When freezingB、When frozenC、When it has been frozenD、When