五倍子与五味子均具的功效是（） A.益气生津 B.清肺降火 C.敛肺止汗 D.宁心安

左心衰竭常表现为（）

A.侧卧时呼吸困难减轻

B.喜欢平卧

C.肺底有干啰音

D.常伴瘀血性肝肿大

E.常采取端坐呼吸体位

There’s no shortage of web sites offering deals-everything from daily deals to members-only private sales. But when it comes to real jaw-dropping deals, there’s one company that seems to have figured out a way to really deliver.

The company is called Quibids and they auction（拍卖）the hottest, in-demand electronics like Apple ipads and ipods, as well as other items like gift cards from the top retailers（零售商）. Unlike other sites, the prices people pay are nowhere near retail. How low are the prices?

$ 33.84 for a new Apple ipad 32 GB（retail $ 600）

$ 22.10 for a new Nikon D90 Digital SLR Camera（retail $ 1070）

Our first reaction on seeing these prices was disbelief. After all, how could Quibids possibly afford to sell these items for so little ---- surely they must be losing a lot of money.

That’s where its unique business model comes into play. You see, for every bid a buyer places for an item on Quibids, the company collects a small fee from the bidder. The fee to bid is only about 60 cents, but based on the volume of sales and bids, the company is able to collect enough to make up for the ridiculous prices the items sell for.

But best of all, participating in the Quibids auction is incredibly fun. Because each bid costs a little to place, shoppers can strategize when to place their bids. Each auction has a strict time limit. When you place your bid, the system adds a little time to the auction to see if any other bids come in. If you have the winning bid when the clock runs out ---- you win the item for that price.

But the best part of Quibids may be the “Buy-It-Now” feature. This allows bidders who did not win an auction to still buy the product they want and apply the cost of the bids they placed as a discount on the regular product price. So you still get the item and the bids you placed previously in the auction don’t cost you anything!

小题1:According to the passage, the success of Quibids mainly lies in          .

A．how its buying and selling is conducted

B．the change in people’s shopping model

C．the quality of the goods and service

D．their willingness to risk losing money小题2:It can be inferred from the passage that          .

A．other retailers will be out of business

B．winning a bid is not just a matter of luck

C．Quibids only sell popular electronics

D．the prices on Quibids are the lowest小题3:A buyer who bid twice for a $ 20 MP4 can get one from “Buy-It-Now” for          .

A．$ 21.2

B．$ 20

C．$ 19.4

D．$ 18.8小题4:Which might be the most suitable title for the passage?

A．Buy Products for Next to Nothing

B．How to Buy New Must–have Electronics

C．The Most Successful Shopping Website

D．Tips on Shopping Online

下列能说明人体中某细胞已经发生分化的是（）。

A.进行ATP的合成

B.进行mRNA的合成

C.细胞中存在血红蛋白基因

D.细胞中存在血红蛋白

A tourist will easily lose his way in Beijing______he has a map or a guide.

A. if
B. because
C. unless
D. when

公诉人在法庭上宣读起诉书以后，( )可以就起诉书指控的犯罪进行陈述。

A．被告人及其辩护人

B．被害人及其诉讼代理人

C．辩护人

D．被告人、被害人