一个三角形两个内角的和小于第三个内角,这个三角形一定是钝角三角形
正确
2018年12月,张阿姨把4000元的存入银行,定期三年,年利率是2.75%到期后,应得利息______元.
I went to the zoo to see some _________ (猴子).
My aunt and her son _________ (是) doctors.
Is your father _________ (生气的) now?
Mary, do not _________ (说话) in the library, please.