including the deposit(押金). "I just didn't have the money."

　　Research found that in the UK one out of three low earners have borrowed money to pay their rent, either from family and friends or through credit cards. A full 70% of low earners are either struggling or falling behind with rent payments, barely managing to have somewhere to live.

　　Someone argues that people who can't afford their rent should move elsewhere, but low pay is widespread and there are more job opportunities in the places with higher rents. If you can barely afford to save ₤10 a month, then the rental deposit, first month's rent and removal fees are far beyond your resources unless you deliberately fall behind on your rent.

　　Increasingly, organizations that deal with poverty and housing are shouting for a housing solution that deals with affordability, not just supply. Arguing that simply increasing supply will cause the market to automatically grow fairer is nonsense.

　　The fact that so many people are struggling to pay their rent should cause outrage(义愤) and shame. And credit is limited: eventually those borrowing to cover rent won't be able to borrow more, and will become homeless or cost the local authority more when they need rehousing. And if people in work are struggling with rent, what hope do people out of work have?

28.What does the underlined word in Paragraph 2 mean?

A. Used up. B. Becoming less and less.

　　C. Incapable of being changed D. Saved up for other purpose.

29.What can we know about low earners?

A. It is the deposit that stops them from renting a house.

B. They can't save even ₤10 a week after paying their rent.

C. They get used to borrowing much money from the banks.

D. One third of them can't afford their rents by themselves.

30.Why do people have to stay in the places with higher rents?

A. Low pay is widespread. B. They may be employed easily.

C. The deposit is low there. D. The government can help them there.

31.What does the author think of some organizations' solution?

A. Fair B. Imaginative. C. Useless. D. Uncertain.

　　Our eyes tear up for various reasons. The most common are tears that are continuously being released to keep eyes slightly wet. Then there are reflex(反射的) tears that are shed（流) when eyes are exposed to things like dust or onion juice. And there are emotional tears pouring out when one is experiencing extreme happiness or sorrow.

　　While all tears are made up of enzymes, antibodies and oils mixed with salt water, the composition of each kind is unique. In a previous study performed on reflex and emotional tears, scientists discovered that the former contained primarily water while the latter included several chemicals, including one that helps reduce pain.

Thus, it would make sense that the tears consisting of the same chemicals would