【单选题】According to the passage, how to understand “wear their hearts on their sleeves like Americans” in paragraph 1?
A.
Americans like to wear their hearts on their sleeves.
B.
Americans like to show their hearts with their sleeves.
C.
Americans are difficult to show their emotions.
D.
Americans are easy to show their emotions.
【判断题】ball中的字母可以组成含有4个元素的集合
【单选题】Why are mischief makers called 'Black Hats'?
A.
Because they wear black hats.
B.
Because they act in a dishonest way.
C.
Because they are magicians.
D.
Because they appear in the night.
【多选题】哌替啶的作用特点,正确的是( )
A.
镇静、呼吸抑制、致欣快、扩血管作用与吗啡相当
【判断题】It is safe to wear black suits and middle-heeled shoes for female candidates in an interview.()
【简答题】Since 1992,cancer death rates among black Americans