2 . Amblyopia is the most common cause of vision loss in children. In all cases of amblyopia, there’s a stronger eye and a weaker eye, and it’s winner-take-all in the cortex (大脑皮层). The cortex learns to ignore the signal from the weaker eye. By ignoring the weaker eye, the brain doesn’t fuse (融合) images from both eyes. As a result, people with amblyopia can have trouble seeing in 3D.

In an attempt to solve this problem, doctors start treating patients with amblyopia at a young age, while their brain pathways are still developing. The children, usually under 7 years old, are often told to wear an eye patch over their strong eye to force the brain to rely on the weaker. But whenever the eye patch is removed, the competition can start over. For lasting improvement, new treatments need to teach the brain to stop suppressing (抑制) key visual cues coming from the weaker eye, says neuroscientist Dennis Levi of the University of California.

Now, several research teams are taking a new way that aims to get the brain to make better use of the information coming from both eyes, Several companies are working on treatments based on this new angle. One is called Luminopia.

Luminopia’s therapy involves having children watch videos through a virtual reality headset. As the children watch, the headset blocks out certain parts of the display for each eye, so the patients actually have to combine input from the two images to get the full video.

The company conducted a trial showing that children with amblyopia begin to see better on eye chart assessments after three months of one-hour sessions done six days a week, But they have yet to measure improvements in long-term effectiveness. It is believed that if people with amblyopia don’t learn to fuse signals from both eyes from a young age, they never will. So some scientists think attempting to treat adults, whose brains have suppressed signals from their weak eye for decades, is a lost cause.

1. Why does a person with amblyopia have trouble seeing in 3D?

A．His brain is unable to receive images.

B．His cortex overlooks signals from the weaker eye.

C．His stronger eye can’t send signals to the brain.

D．His weaker eye fails to receive signals.

2. Which of the following best describes the effect of an eye patch?

A．Ineffective.	B．Temporary.
C．Wonderful.	D．Comprehensive.

3. What is the working principle of Luminopia’s therapy?

A．Activating the weak eye to get the full video.

B．Forcing the brain to rely on the weaker eye.

C．Improving the situations with eye chart assessments.

D．Blocking out the images received from the stronger eye.

4. What can we learn about Luminopia’s therapy from the last paragraph?

A．It has an instant effect.	B．Adults are is main targets.
C．More trials need to be conducted.	D．It has long-term effectiveness.

3 . 阅读下面材料，在空白处填入1个适当的单词或括号内单词的正确形式。

Most of the Chinatown in San Francisco     1     (destroy) in the 1906 earthquake, but the city and residents rebuilt it, taking care to include lots of Chinese architecture.     2     (traditional), visitors enter Chinatown through the legendary Dragon Gate, which was built using materials     3     (donate) from China. Other famous sites include the Tin How Temple and Ban k of Canton, to name but a few. Visitors can also spend hours just exploring the interesting sights, smells, and sounds of China. Portsmouth Square is also a key site, being the centre of Chinatown. It has a long and famous history,     4     the author Robert Louis Stevenson having spent much time writing there. These days, the square is a great place to see traditional Chinese culture in real life, such as games of Chinese chess, and people     5     (practise) tai chi.

The stores in the Chinatown offer     6     unique range of souvenirs, goods, and clothing. All kinds of traditional Chinese herbal medicine can be found, too,     7     there are Chinese tea stores, where visitors can taste and buy varieties of Chinese tea.

But perhaps     8     many tourists and San Franciscans treasure most about Chinatown is its food. There is Chinese food     9     (suit) everyone’s taste, with traditional dishes from all over China.

Chinatowns are an important part of the     10     (diversity) culture of the USA. They allow visitors who have never been to China to experience traditional Chinese culture first hand.

4 . 假设你是李华，请向你校英文报“城市风采”栏目写一篇短文，介绍一个国内你喜欢或去过的地方。内容包括：
1.该地方的基本情况（如名称、地理位置、人口、面积等）；
2.该地方的特色（如景点、文化等）；
3.你对该地方的印象和感受。
注意：（1）词数不少于80字；
（2）可适当加入细节，使内容充实、行文连贯。
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5 . 听下面一段较长对话，回答以下小题。
1. Which season is it now?

A．Spring.

B．Summer.

C．Autumn.

2. What are the speakers doing in the park?

A．Taking a walk.

B．Picking flowers.

C．Eating ice-cream.

7 . Why does the man look tired?

A．He stayed up late last night.

B．His alarm kept ringing.

C．He rushed there.

10 . Where does the conversation probably take place?

A．At a party.

B．At a station.

C．At a concert.