欲估计某地青少年龋齿患病率的95%可信区间，抽样调查了该地180名青少年龋齿患病情况

If you spend more than 100 yuan, you can get a pair of tennis rackets. Hurry up and have a look!

Jeans Brand (牌子): Robin Hood Color: black, blue, white Price: Only ￥45	Brand: Li Ning Color: black, pink, yellow Material: wool Price: ￥48 after 50% off
Sports shoes Brand: Nike Color: white, red, blue Price: ￥166	Sports socks Brand: Langsha Color: white, black, blue Material: cotton Price: ￥9 for each
Backpack (背包) Brand: Kids Color: black, blue, brown Price: ￥25 and get a sports cap for free.	Shorts Brand: Adidas Color: yellow, black, red Price: ￥30 for each, but ￥55 for two
T- shirt

小题1:Jim buys a backpack, a T-shirt and a pair of sports socks. What else can he get?

A．A sports cap.	B．A pair of tennis rackets.
C．A pair of jeans.	D．Nothing else.

小题2:How much is the T-shirt before it is off?

A．￥24.

B．￥48.

C．￥72.

D．￥96.

小题3: Bill wants to buy sports socks. What brand can he buy?

A．Li Ning.

B．Adidas.

C．Langsha.

D．Kids.