明代初年，（）的《三遂平妖传》开神魔小说的先河。

如图，沿波的传播方向上有间距均为1米的六个质点a、b、c、d、e、f，均静止在各自的平衡位置，一列横波以1米/秒的速度水平向右传播，t=0时到达质点a，a开始由平衡位置向上运动，t=1秒时，质点a第一次到达最高点，则在4秒＜t＜5秒这段时间内（　　） A．质点c的加速度逐渐增大 B．质点a的速度逐渐增大 C．质点d向下运动 D．质点f保持静止

（18分）下表为某市5年来城乡居民生活变化情况

注：恩格尔系数高于60%是绝对贫困；60%－50%是温饱；50%－40%是小康；40%－20%是富裕。

（1）说明图表反映的经济信息。

（2）运用生产和消费的关系说明，上述变化对该市生产的发展产生怎样的影响？

某出口企业向美元区出口机器设备，当美元与人民币的兑换比率为1∶7时，每出口一套价格为12万美元的设备，可获利36万元人民币。当美元与人民币的兑换比率变为1∶6．5时，在成本不变的情况下，此时该企业每出口一套设备，获利（）

A.30万元人民币

B.32万元人民币

C.33.75万元人民币

D.36万元人民币

王莉娜与张学斌自由恋爱，并按当地风俗举行了订婚仪式。王莉娜的母亲李玉芝以张学斌经常赌博为由反对二人恋爱，并介绍本单位男青年刘军与王莉娜相识，并确立了恋爱关系。王莉娜在与刘军恋爱后曾口头通知张学斌解除婚约。半年后，当王莉娜与刘军向婚姻登记机关提出结婚登记申请时，张学斌向当地人民法院起诉，提出以下请求：

（1）自己与王莉娜订婚在先，王莉娜单方解除婚约无效，已形成的未婚夫妻关系应予保护。

（2）订婚时，按当地风俗曾给王莉娜金项链一条、钻戒一枚作为彩礼，应予返还。

（3）李玉芝有干涉婚姻自由的行为，应予惩罚。

根据本案案情，回答下列问题，并说明理由：

李玉芝的行为是否构成干涉婚姻自由？

Part 3

Questions 19-25

·Read the following passage and choose the correct answer from A, B, C and D.
More and more, the operation of our businesses, government, and financial institutions are controlled by information that exists only inside computer memories. Anyone clever enough to modify this information for his own purpose can reap substantial rewards. Even worse, a number of people who have done this and been caught by it have managed to get away without punishment.
It is easy for computers crime to go undetected if no one checks up what the computer is doing. But even if the crime is detected, the criminal may walk away not only unpunished but with a growing recommendation from his former employers.
Of course, we have no statistics on crimes that go undetected. But it is disturbing to note how many of the crimes we do know about were detected by accident, not by systematic inspections or other security procedures. The computer criminals who have been caught may have been the victims of uncommon bad luck.
For example, a certain keypunch operator complained of having to stay overtime to punch extra cards. Investigating revealed that the extra cards she was being asked were for dishonest transactions. In another case, dissatisfied employees of the thief tipped off the company that has been robbed.
Unlike other lawbreakers, who must leave the country, commit suicide or go to jail, computer criminals sometimes escape punishment, demanding or not only that they not be charged but that they be given good recommendations and perhaps other benefiting, their demands have been met.
Why Because company executives are afraid of the bad publicity that would result if the public found out that their computer had been misused. They hesitate at the thought of a criminal boasting in open court of how he juggled the most confidential records right under the noses of the company’s executives, accountants, and security staff. And so another staff computer criminal departs with just the recommendation he needs to continue his crime elsewhere.

It is implied in the third paragraph that ______.

A．the rapid increase of computer crimes is a troublesome problem

B．most computer criminals are smart enough to cover up their crimes

C．many more computer crimes go undetected than are discovered

D．most computer criminals blame their bad luck