Normally D/P will apply with sight drafts and D/A will apply with usance drafts.（）

The sight of a sick horse being driven along the streets of the village remained ________ him for weeks.

A) of

B) on

C) to

D) with

Scientists Develop Ways of Detecting Heart Attack

German researchers have comeup with a new generation of defibrillators(除颤器) and early-warn-ing software aimed at offeringheart patients greater _(51) from sudden death from cardiac ar-rest (心脏停搏).

InGermanyalone, around 100,000people die annually _(52) a result of cardiac arrest and many of these casesare caused by disruption to the heart's thythm. Those most at _(53) are patients who have alreadysuffered a heart attack, and for years the use of defibrillators has proved'useful in _ _(54)life-threatening disruptions to heart thythms and correcting them automaticallyby intervening within seconds. These devices _(55) on a range of functions, such asthat of pacemaker(起搏器).

Heart specialists atFreiburg's University Clinic have now achieved a breakthrough with anim-planted defibrillator (56) of generating a six-channelelectrocardiogram (ECG,心电图 ) with-in the body. This integrated systemallows _ _(57) diagnosis ofsevere blood-flow problems and a pending. (即将发生的) heartattack. It will be implanted in . _(58) for the first time this year.Meanwhile,researchers at the Fraunhofer Institute for Applied Mathematics inKaiserslautern have developed new computer software that _(59) the evalution ofECG data more precise.

Theoverwhelming majority of patients at risk will not have an implanteddefibrillator and must for this _(60)undergo regular ECGs. "Many of the current programs only take into _ (61) a linear correlation of the data.We are, however, making use of a non-linear process (62) reveals the chaotic patterns ofheart beats as an open and complex system," Hagen Knaf says,"In thisway changes in the heart _(63) over time can be monitored and individualvariations in patients taken into account. " An old study of ECG data,based upon 600 patients who had (64)a subsequent heart attack, enabled the researchers to compare risks and to showthat the new software evaluates the ( 65) considerably better.

A.service

B.discount

C.protection

D.advice

A ship will always want to settle into a position where ______．

A.the pivot point and point of influence of wind in are not in alignment

B.the pivot point and point of influence of wind in are in alignment

C.the point of influence of wind moves depending on the profile of the ship presented to the wind

D.the ship steams slowly in rough seas

The sight of a sick horse being driven along the streets of the village remained ______ him for weeks.

A．of

B．on

C．to

D．with

听力原文： In many parts of the world, farmers and their families live in villages or towns. In the United States, however, each farm family lives on its own fields, often beyond the sight of any neighbors. Instead of traveling from a village to the fields every morning, American farmers stay on their land throughout the week. They travel to the nearest town on Saturdays for shopping or on Sundays for church. The children ride on buses to large schools which serve all of the farm families living in the area. In some areas, there are small schools serving a few farm families, and the children walk to school.

Of course life keeps changing for everyone, including farmers. Today there are cars, good roads, radios, and television sets. And of course there are modern machines for farming. All of these have changed farm life.

For many years, however, farming in America was often a lonely way of living. Farmers had to deal with their own problems, instead of getting help from others. They learned to try new methods, and to trust their own ideas instead of following older ways.

(30)

A．They live in bigger houses.

B．They live in villages or in towns.

C．Each family lives on its own fields.

D．They use modern machines in farming.