CO2通过呼吸膜的速率比O2快的主要原因是（） A.原理为易化扩散 B.分压差比O2

.

Some couples spend every waking minute together. Others fill their hours with personal hobbies,outside interests and even part-time jobs, just to keep their distance from each other! "There should beprivate time and couple time," suggests Dr. Stephen Treat at Jefferson Medical College in Philadelphia."You don't want your latter years to turn into a process where two people unite as one. If you hold tootightly to your partner, it's going to cause resentment and anger. If you're completely separate, you'llboth be lonely and disconnected. You need balance. So you have to talk about how vou'll achieve that."

The right baiance? It's different for every couple. "Having a conversation about time can be difficult,but it's important for both partners to process those feelings out loud," Dr. Treat says. "You should notbe accusing and act as a judge - ask the difficult questions, but do it in a loving way. You could saysomething like, 'How are we going to be as individuals and how are we going to be as a couple?' "

Barbara and Chris Christensen have achieved the balance that works for them. In addition to daily

routines that keep them close - including about 10 minutes for a daily check-in and about a half hourof relaxation time - they each maintain separate interests and friendships.

"We have found that we need time apart," Barbara says. "I have a group of women friends that Ihave known for the last 30 years. We have dinner out once a month. We women also have parties and weekend or weeklong vacations as a group at a beach or somewhere. Chris, a former fighter pilot, has

many aviation-oriented(航空的) groups and friends and also a penny-ante poker-playing  (玩扑克)

group of our friends. I may be with him during the poker night, but I don't play, and the wives usually

watch a cchick flick' DVD or something while the poker group has an evening of fun. We have found itimportant to have separate time as well as together time."

61. The author writes the passage to _              .

A. offer some suggestions on how to spend the time afier retirement

B. advise couples to develop their separate hobbies

C. warn couples not to be accusing of each other

D. give people some advice on how to entertain themselves after retirement

62. Dr. Stephen suggests that              after retirement.

A. couples stay together all the time

B. couples express their feelings in a loving way

C. couples be separate

D. wives make many friends

63.1t can be inferred that

A, many couples are faced with problems after retirement

B. America has a large population of retired people

C,. most people join various sociai groups after retirement

D. playing poker is a popular activity among retired people

64. Barbara and lier friends do the following except

A. having dinner regularly

B. holding parties

C. having weekly vacations at the beach

D. having fun playing poker

65. The second paragraph is mainlv intended to

A. warn the husband not to act as ajudge

B. suggest couples have discussions about difficulties

C. suggest how to keep the correct balance

D. require couples to be considerate

引物酶与转录中的RNA聚合酶之间的差别在于它对（）不敏感；后随链的合成是（）的。

组织结构图中矩形框的表达含义是( )。

A．一个建设项目
B．一个计划流程
C．一个逻辑关系
D．一个组织系统

现在大城市搞外来务工人口集中居住，你有何看法

组织实施无人机活动的单位或个人应具备哪些安全实施方案？