题目内容：

 

In the next few years, battery technology is going to grow rapidly.

No more charging your smart phone every day...

No more “range anxiety” for electric cars, as new lithium batteries （锂电池）allow them to drive hundreds of miles on a single charge, just like a tank of gas.

And a tiny Chinese company is to be the leader of it all.

It already counts Motorola, Nokia, and Samsung as customers for its advanced batteries.

But the real money is going to come when it starts selling electric cars.

Right now, the stock is trading at an extreme discount, offering in-the-know investors a chance to get in and make a killing.

You need to know all the details about this opportunity today — and not a day later.

To do that, and to gain access to all the information you'll need to invest confidently, simply sign up for the free e-Letter from Energy & Capital by entering your email address below...

Once you do, we'll rush you our latest report, China's $2.00 Lithium Linchpin.

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1.What does the underlined part “make a killing” in Paragraph 7 mean?

A. Beat all other businesses.

B. Make a lot of money in a short time.

C. Force other batteries to withdraw from market.

D. Be the business leader in battery making.

2.What is the possible problem with online subscribing?

A. The giving-away of privacy.

B. Getting lots of junk emails.

C. Becoming a member of some organization unwillingly.

D. Not being able to unsubscribe.

3.Where is this material probably from?

A. A magazine.    B. A newspaper.        C. A website.        D. A booklet.

4.This passage is mainly to ______.

A. advertise new batteries             B. find potential investors

C. promote Energy & Capital       D. sell new technology