题干
My brother is going _________ to be a doctor.
A：study medicine
B：to study medicines
C：to study medicine
D：studying medicine
答案(点此获取答案解析）
C
My brother is going _________ to be a doctor.
A：study medicine
B：to study medicines
C：to study medicine
D：studying medicine
为等边
所在平面内一点，满足
，若
，则
的值为
H2（g）＋Br2（g）－Q，若升高温度，发生改变的是 （ ）