It is abnormal that when the engine is being turned by the turning gear or by hand, （）.

We must cherish experience______at the cost of blood.

From the text we learn that Stephen Cooper is

“Must we start the experiment now?” “No, you （）.”

From the passage we may conclude that the writer is

 ______ twice a year, whether it is a car or a bus or a truck, is the rule that every driver must obey in this city.

If the Shipowner relies on an excepted peril，he must（）that the loss or damage was caused thereby.

Practice 2　　We must work passionately and indefatigably to bridge the gulf between our scientific progress and our moral progress. One of the great problems of mankind is that we suffer from a poverty of the spirit which stands in glaring contrast to our scientific and technological abundance. The richer we have become materially, the poorer we have become morally and spiritually.　　Every man lives in two realms, the internal and the external. The internal is that realm of spiritual ends expressed in art, literature, morals and religion. The external is that complex of devices, techniques, mechanisms and instrumentalities by means of which we live. Our problem today is that we have allowed the internal to become lost in the external. We have allowed the means by which we live to outdistance the ends for which we live. So much of modern life can be summarized in that suggestive phrase of Thoreau: “Improved means to an unimproved end. “ This is the serious predicament, the deep and haunting problem, confronting modern man. Enlarged material powers spell enlarged peril if there is not proportionate growth of the soul. When the external of man’s nature subjugates the internal, dark storm clouds begin to form. (Martin Luther King: Where Do We Go from Here: Chaos or Community?)

We must firmly follow the path of development that is ______ China’s national conditions.

The Shipowner must not stow goods on deck（）there is a trade usage to that effect or the Charterer has given his express or implied consent.

Practice 6　　Think carefully about the issue presented in the following excerpt and the assignment below.　　Akira Kurosawa’s film masterpiece Rashomon portrays several people who have witnessed a death. As each observer recounts the event as he or she witnessed it, we come to realize that each person’s story varies greatly from every other account. Watching the movie, we reflect the truth of an experience—and perhaps all truth—is different for each person.　　Assignment: What is your opinion of the claim that truth is not objective, but rather is determined by each individual? Plan and write an essay in which you develop your point of view on this issue. Support your position with reasoning and examples taken from your reading, studies, experience, or observations.

（）,we keep records on all the experiments so that we may have enough.