题库
题库
A．avoid being swept away by rapid currents
B．emerge from water now and then to breathe
C．alert themselves to the approaching enemy
D．be sensitive to the ever-changing environment
| 单选题 | In spite of the ___________ economic forecasts, manufacturing output has risen slightly. | 查看答案 |
| 单选题 | Cultural _______________ indicates that human beings hand their languages down form one generation to another. | 查看答案 |
| 单选题 | 查看答案 | |
| 单选题 | 查看答案 | |
| 单选题 | A new study on birds’ sleep has revealed that ____________. | 查看答案 |
| 单选题 | While sleeping, some water mammals tend to keep half awake in order to __________. | 查看答案 |
| 单选题 | 查看答案 | |
| 单选题 | 查看答案 | |
| 单选题 | Which of the following is true about driving on an automated highway? | 查看答案 |
| 单选题 | 查看答案 | |
| 单选题 | 查看答案 | |
| 单选题 | 查看答案 | |
| 单选题 | 查看答案 | |
| 单选题 | He ____________ his head, wondering how to solve the problem. | 查看答案 |
| 单选题 | According to the passage, what kind of people are rare? | 查看答案 |
| 单选题 | The _________of the scientific attitude is that the human mind can succeed in understanding the universe. | 查看答案 |
| 单选题 | 查看答案 | |
| 单选题 | The helicopter _____________ a light plane and both pilots were killed. | 查看答案 |
| 单选题 | In some countries, students are expected to be quiet and ___________ in the classroom. | 查看答案 |
| 单选题 | The two most important ______________ in making a cake are flour and sugar. | 查看答案 |