百合固金汤的主治症状中，有（） A.干呕头痛 B.吞酸吐苦 C.咽喉燥痛 D.心动悸

阅读理解。

     Sue is only five.  She doesn't go to school.  And of course, she doesn't know how to read and write.

But her sister, Ann is a schoolgirl. She is eleven. One day, Ann saw her little sister at the table with a

pen in her hand and a big piece of paper in front of her.

     "What are you doing, Sue?"Ann asked.

     "I'm writing a letter to my friend, Lily. "

     "But how can you? You don't know how to write. "Ann said.

     "Well," Sue said. "It doesn't matter (这没关系).  Because Lily doesn't know how to read. "

短根据文内容，判断下列句子正( T)误( F)。

( )1. Sue is a schoolgirl.

( )2. Ann knows how to read and write.

(     )3. Sue can write a letter.

( )4. Lily doesn't go to school.

( )5. Sue is clever.

给出如下三个等式：①f(a+b)=f(a)+f(b)；②f(ab)=f(a)+f(b)；③f(ab)=f(a)×f(b)，则下列函数中，不满足其中任何一个等式的函数是[ ]

A．f(x)=x²

B．f(x)=3x

C．y=2^x

D．f(x)=lnx

在“互成角度的两个力的合成”实验中，用两个弹簧秤分别钩住细绳套，互成角度地拉橡皮条，使它伸长到某一位置点，为了确定两个分力的大小和方向，这一步操作中必须记录的是（ ）

A．橡皮条固定端的位置

B．描下点位置和两条细绳套的方向

C．橡皮条伸长后的总长度

D．两个弹簧秤的读数(2)做实验时，根据测量结果在白纸上画出如图所示的图，其中为橡皮筋与细绳的结点．图中的      是和的合力的理论值；          是和的合力的实际测量值。

在心脏挤压时，两臂位于双手的正上方，两臂伸直，垂直向下用力，但两臂可作屈伸，可保持积压的力量。