f(x)在[0,1]上有连续的二阶导数，f(0)=f(1)=0,任意x属于[0,...715af2ac3f81f8.png"]
f(x)在[0,1]上有连续的二阶导数，f(0)=f(1)=0,任意x属于[0,...715af2ac3f81f8.png"]
It was at 8 _____ I went to bed yesterday. A: that B: who C: when
It was at 8 _____ I went to bed yesterday. A: that B: who C: when
娟娟说：38×13×8=1，所以38、13和8互为倒数．______．
娟娟说：38×13×8=1，所以38、13和8互为倒数．______．
Lie down on your bed when you have a nosebleed. A: T B: F
Lie down on your bed when you have a nosebleed. A: T B: F
电线积冰架导线和仿输电线路导线外径是()、()mm。 A: 4 B: 8 C: 15 D: 26.8 E: 31 F: 38
电线积冰架导线和仿输电线路导线外径是()、()mm。 A: 4 B: 8 C: 15 D: 26.8 E: 31 F: 38
It is ten o’clock in the morning but he is still____() A: in the bed B: in bed C: on bed
It is ten o’clock in the morning but he is still____() A: in the bed B: in bed C: on bed
Mother often ______ for me. A: makes a bed B: makes the bed C: makes bed
Mother often ______ for me. A: makes a bed B: makes the bed C: makes bed
In 1803 the United States purchased Louisiana from _____.
In 1803 the United States purchased Louisiana from _____.
I didn’t go to______until midnight last night. A: [A] bed B: the bed C: my bed
I didn’t go to______until midnight last night. A: [A] bed B: the bed C: my bed
She always makes ______ after she gets up. A: a bed B: B. the bed C: C. bed
She always makes ______ after she gets up. A: a bed B: B. the bed C: C. bed