现在全世界的人口已经超过____ 亿。

请阅读下列材料，分析回答问题：

材料：“种瓜得瓜，种豆得豆”、“龙生龙，风生风、老鼠的儿子会打洞”这些古老的谚语，反映了生物的遗传现象，小明是个帅气的小男孩，他对自己的生命历程充满了好奇！请结合图帮小明分析一下：

（1）图中过程①发生的部位是睾丸，过程③发生的部位是____ （填“子宫”或“输卵管”）．

（2）甲、乙两类受精卵发育为小明的是____ 

（3）小明刚出生时，医院就给他接种了卡介苗，使他体内产生了抵抗结核杆菌的特殊蛋白质，即____ ，这样做是为了发挥机体的____ 性免疫的作用．从预防传染病的三个措施看这属于____ 

（4）小明今年5岁了，大家都说他长得像妈妈，从遗传和变异角度看，这是____ 现象．

下列关于人类染色体数目的叙述中，不正确的是（　　）

根据短文理解，选择正确答案。

    Tea to the Chinese is like coffee to the Americans. It's something that they can't live without.

    Chinese tea has a history of more than 5,000 years. It was most popular during the Tang Dynasty. China has many kinds of tea. White, yellow, green, oolong (乌龙茶), black and dark tea are the six main kinds.

    People in different places drink tea in their own way. People in Guangdong and Fujian love to drink “Kung Fu Tea” in small tea cups. They clean the teapot (茶壶) first with boiling water to warm it up. Then they fill the teapot with tea leaves before putting in the boiling water.

    In Beijing, people love jasmine flower（茉莉花）green tea. In Tibet, butter tea (酥油茶) is a popular drink to build up energy.

    There are rules to follow when we serve tea to others. Most importantly, remember to make the cup only seven-tenths full. If the cup is too full, it makes the cup too hot for them to hold.