3. 有同学正在对比两人的信息，请根据文章内容补全韦恩图。
Leonardo da Vinci
Italy
He drew:
①
(look so ②)
flying machines
③
④ built
his machines

⑦
think alike.
Yan Su
China
He drew ink paintings to ⑤ himself
He invented:
a south-pointing chariot
a ⑥

3. ①Oil paintings ②real ③travelling machines ④nobody ⑤express ⑥water clock ⑦Great minds

七、同学们在大梅沙阅读了有关离岸流的告示并参加知识竞猜,请填写正确的字母编号。
What are rip currents（离岸流）?
• fast moving water towards the sea
• faster than most swimmers
• pull people out to the sea
When you see somebody in it:
⚠ don’t go into the sea
⚠ get help from the lifeguard
⚠ call 110

() 1. Which one is the rip current?
A. The slow moving water towards the sea.
B. The quick moving water towards the shore.
C. The quick moving water towards the sea.
() 2. When swimmers get stuck in a rip current, they should ...

3. Why is the rip current so dangerous?

Because ... So ...
A rip current moves very fast. It’s ① . It has ② .
It moves towards the sea (not the shore). When the swimmers get stuck, they ③ .
A. go away from the shore
B. faster than most swimmers
C. a stronger force to pull the swimmers

1. C 2. B 3.①B ②C ③A