Some of these pressures are stronger than others. The pressures in China may be stronger than the examples I gave, but if they are societal pressures they are no more valid or invalid than the ones we experience.
If women here are having abortions because they don't want to have kids at a young age, or because they aren't married, etc. that is no better than abortions in China over the babies sex.
You are right. that is why its called pro-choice. People should have the opportunity to choose for themselves. That is why contraception should cheap and easy to get. pre-natal care should be cheap or rather free (like it is here in Denmark).
Abortions should be cheap(or free) and easy to get, and giving birth should be cheap or free. Follow up care, pediatricians etc should be free.
Women and men alike should be offered compensation for lost wages when the child is an infant, and daycare should be cheap.
The focus should be on reducing the number of unwanted pregnancies, not on reducing abortions.
And if society has standards that say that women are worth less than men, then we should work on getting that changed for the good of all. As a side effect less women would find that a pregnancy with a female fetus would be an unwanted pregnancy.
Go to the root of the problems.