题干
— John, I'm very tired. Let's stop to have a ______.
— OK. Then let's sit under the tree and drink some water.
A：try
B：meal
C：rest
答案(点此获取答案解析）
C
— John, I'm very tired. Let's stop to have a ______.
— OK. Then let's sit under the tree and drink some water.
A：try
B：meal
C：rest
B（g），在相同条件下，若分别再向容器中通入一定量的A气体或者B气体，重新达到平衡后，容器内A的体积分数比原平衡时 （ ）