下列哪项是急性肾盂肾炎的大体病变？（） A.颗粒固缩肾 B.大红肾 C.蚤咬肾 D.

根据《招标投标法实施条例》的规定，资格预审后联合体增减、更换成员的，其投标()。

A.有效

B.无效

C.效力待定

D.可撤销

乳牙迟早都要被恒牙取代，故保护乳牙也没有多大意义。

Barack and Michelle Obama understand the heavy burden of student loan debt. The Obamas did not pay off their student loans until Obama’s best-selling books earned them millions of dollars.
With the cost of a college education (47) , more than 60% of students take out loans to fund their undergraduate education. On average, students who borrow graduate with debts of 22,700--a (48) of more than 18% from 2000. But some of those with a newly acquired bachelor’s degree are restrained with debts of 40,000 or more. You think this economy’s tough Try finding a job with the (49) of repaying tens of thousands of dollars in debt.
Now, a new federal program--Income-Based Repayment--is making it (50) to pay back these loans. If a student chooses to repay her or his loan with this plan, payments are then readjusted--based on their income to something they can (51) afford. All debt will be forgiven after 25 years. A graduate who earns less than 150% of the (52) line won’t have to make any payments. This is in addition to the year-old Public Service Loan For-giveness program for those (53) in jobs such as law enforcement, public health and social work. Their loans will be forgiven after 10 years.
This (54) isn’t perfect; the loans have to be federal loans, not (55) But students with more than one federal student loan can combine them under the program. In some cases, borrowers with large debt and low-to- moderate incomes may benefit at the end of 25 years, with the (56) of their debt forgiven. Others with higher incomes, though, will pay more.

• A) earning
• B) State
• C) rising
• D) jump
• E) pressure
• F) initiative
• G) poverty
• H) public
• I) balance
• J) raising
  K) private L) barelyM) easierN) working O) reasonably

某青年女性，患支气管扩张多年，常反复咯血。本次因大咯血而急诊住院，经救治后咯血已止。

为减少支气管扩张病人呼吸道感染的发生，尤应重点做好下列哪项护理工作

A．卧床休息

B．高蛋白易消化饮食

C．保持口腔清洁

D．病室空气流通

E．保持一定的温度