下列（）语句用于创建触发器。

A:CREATE PROCEDURE B:CREATE TRIGGER C:ALTER TRIGGER D:DROP TRIGGER

下列（）语句用于删除触发器。

A:CREATE PROCEDURE B:CREATE TRIGGER C:ALTER TRIGGER D:DROP TRIGGER

SQL Server2005中，如果要删除一个存储过程，则可以使用（）语句。

A:create procedure B:drop database C:drop procedure D:drop trigger

SQL Server2005中，使用（）可以创建一个触发器。

A:create procedure B:create table C:create trigger D:create index

在某菜单中，有一菜单项（Caption）内容是”NEW”，名字（Name）是“Create”，则单击该菜单项所产生的事件过程应是（）。

A:Private Sub MnuNEW_Click（） B:Private Sub Create_Click（） C:Private Sub NEW_Click（） D:Sub Mnu_Create_Click（）

The safety of mobile phones (U. S. cell-phones) seems to face new questions after British researchers found that microwave emissions can affect the health of earthworms in unexplained ways.
The larvae of tiny soil worms called nematodes grew faster and became more (1) after they were (2) for a long time to weak microwave radiation, of the (3) strength and frequency as that (4) by mobile phones, they found.
Why this occurred is (5) , and there is no evidence that human health is also affected. But, they warn, the finding challenges the standards which (6) whether a mobile is safe or not.
These standards are based on whether the radiation is strong enough to cause a batch of (7) to warm up. Heat causes the chemical bonds in cells to (8) , a disruption that can be a potential (9) for cancer.
The research, led by David de Pomerai at Nottingham University, central England, said larvae exposed to the microwaves (10) between eight and eleven percent faster than (11) which had not been exposed.
In addition, the (12) of worms that (13) into egg-bearing adults was 28～40 percent higher.
By comparison, worms that had been exposed to (14) heat suffered a 10-percent reduction in their growth rate, and (15) none developed into fertile adults.
The experiment is important because it suggests that microwaves might trigger biological effects. (16) warming any tissues.
The scientists do not (17) out the possibility that radiation could cause hot-.spots to occur somewhere in the worm that then affected cell (18) .
The worry, though, is that the 19 basis for determining mobile safety is whether microwaves cause heating in bulk tissue rather than just at (20) in it, they note.

A:inspiration B:spur C:push D:trigger

Section Ⅰ Use of English Directions: Read the following text. Choose the best word(s) for each numbered blank and mark A, B, C or D on ANSWER ISHEET 1. The human nose is an underrated tool. Humans are often thought to be insensitive smellers compared with animals, (1) this is largely because, (2) animals, we stand upright. This means that our noses are (3) to perceiving those smells which float through the air, (4) the majority of smells which stick to surfaces. In fact, (5) , we are extremely sensitive to smells, (6) we do not generally realize it. Our noses are capable of (7) human smells even when these are. (8) to far below one part in one million. Strangely, some people find that they can smell one type of flower but not another, (9) others are sensitive to the smells of both flowers. This may be because some people do not have the genes necessary to generate. (10) smell receptors in the nose. These receptors are the cells which sense smells and send (11) to the brain. However, it has been found that even people insensitive to a certain smell (12) can suddenly become sensitive to it when (13) to it often enough. The explanation for insensitivity to smell seems to be that brain finds it (14) to keep all smell receptors working all the time but can (15) new receptors if necessary. This may (16) explain why we are not usually sensitive to our own smells--we simply do not need to be. We are not (17) of the usual smell of our own house, but we (18) new smells when we visit someone else’s. The brain finds it best to keep smell receptors (19) for unfamiliar and emergency signals (20) the smell of smoke, which might indicate the danger of fire.

A:introduce B:summon C:trigger D:create

As heart disease continues to be the number-one killer in the United States, researchers have become increasingly interested in identifying the potential risk factors that trigger heart attacks. High-fat diets and "life in the fast track" have long been known to contribute to the high incidence of heart failure. But according to new studies, the list of risk factors may be significantly longer and quite surprising.
Heart failure, for example, appears to have seasonal and temporal patterns. A higher percentage of heart attacks occur in cold weather, and more people experience heart failure on Monday than on any other day of the week. In addition, people are more susceptible to heart attacks in the first few hours after waking. Cardiologists first observed this morning phenomenon in the mid-1980, and have since discovered a number of possible causes. An early-morning rise in blood pressure, heart rate, and concentration of heart stimulating hormones, plus a reduction of blood flow to the heart, may all contribute to the higher incidence of heart attacks between the hours of 8:00 AM and 10:00 AM.
In other studies, both birthdays and bachelorhood have been implicated as risk factors. Statistics reveal that heart attack rates increase significantly for both females and males in the few days immediately preceding and following their birthdays. And unmarried men are more at risk for heart attacks than their married counterparts. Though stress is thought to be linked in some way to all of the aforementioned risk factors, intense research continues in the hope of further comprehending why and how heart failure is triggered.

A:We now fully understand how risk factors trigger heart attacks. B:We recently began to study how risk factors trigger heart attacks. C:We have not identified many risk factors associated with heart attacks. D:We do not fully understand how risk factors trigger heart attacks.

Which command is used to create a database file that it's structure is same as another one's in FoxPro DBMS ( )

A:CREATE B:COPY C:APPEND D:INSERT