问题 单项选择题

平滑面早期龋临床特点是()

A.呈白垩色点或斑,一般无主观症状,有一定的好发部位

B.呈白垩色点或斑,遇冷热刺激时可出现疼痛

C.呈白垩色点或斑,可出现在牙齿的任何部位

D.呈白垩色点或斑,探针硬而光滑,病变呈对称性

E.浅龋洞形成,遭受外界刺激时可有反应

答案

参考答案:A

阅读理解

The marine environment is fascinating to study and work in due to its beauty, richness, and complexity. It covers three quarters of the surface of the Earth, yet we know more detail about the surface of Mars.

In the past, it was seen as both an inexhaustible resource and a bottomless sink for our wastes. Yet the increasing pressures of overpopulation, pollution and the threat to our natural environment mean that there is an increasing need for scientists who can understand how it all works, how it affects us, and how we are affecting it from global warming through to the smallest plankton.

From local issues to global concerns, we now know that the marine environment is inextricably linked to our lives, and to our future survival. It is an area where much remains to be discovered, and where only a multidisciplinary approach can cover the breadth of issues to be confronted. This is the approach taken on our Marine Environmental Science degree course.

This course takes a multi-disciplinary approach to explore and understand the marine environment. After an initial grounding in basic science, optional choices are available in specialist topics such as marine ecosystems and pollution, coastal navigation and oceanography, among others.

Our new harbor side marine laboratory is used for some of the specialist lectures, laboratory and project work, while a week's residential field course in the Isle of Man provides training to prepare for the research project conducted in your final year. There is an optional trip to Belize in the final year to study tropical marine environments.

小题1: From the passage, we can infer that ______.

A.people waste a lot of resource

B.marine environment covers 3/4 of the surface of Mars

C.marine environment is beautiful for its sufficient resources

D.the Earth is similar to Mars小题2:The present environment of the Earth forces the experts and scholars to study ______.

A.the relationship between people’s actions and natural environment

B.the relationship between people’s actions and pollution

C.the relationship between people’s actions and overpopulation

D.the relationship between people’s actions and plankton小题3: According to the passage, a multi-disciplinary approach is effective because _______.

A.we can choose some issues as optionally as we can

B.we have practiced the approach for a long time

C.the approach is linked to our future survival

D.the approach covers a lot of problems we will meet小题4:We can divide the lectures of the course into ______ parts.

A.1

B.2

C.3

D.4小题5:If a student choose marine Environmental Science degree course, he must ______.

A. make lectures about the issues to be confronted

B. provide training to get ready to do research project

C. take several days residential field in the Isle

travel to Belize to study tropical marine environments

Answers:

单项选择题