元素代号
L
M
Q
R
T
原子半径/nm
0.160
0.143
0.102
0.089
0.074
主要化合价
+2
+3
+6、﹣2
﹣2
下列说法正确的是（ ）
A：L,Q形成的简单离子核外电子数相等
B：L,R的单质与盐酸反应速率为R＞L
C：Q,T两元素的氢化物的稳定性为HnT＜HnQ
D：M与T形成的化合物能与NaOH溶液反应
读一读，给下列句子排序。
____ He washed clothes and cleaned his room on Saturday afternoon.
____ Last weekend was Wu Yifan's grandma's birthday.
____ On Sunday morning, he played football with his friends.
____ He visited his grandma on Saturday morning.
____ He watched TV Saturday evening.
①给萎蔫的蔬菜喷洒清水 ②糖拌西红柿 ③萎蔫的萝卜泡在清水里 ④腌渍的青菜．
我们应该把自己的人生理想建立在_____基础上，避免不切实际的空想（ ）
