他曾经是一位小学老师。

•  céng　jiān

• céng　jīng　

Answer explanation

The correct choice is 'céng　jīng' as it means 'once was' which fits the context of the sentence describing the person's past occupation as a primary school teacher.

王林叔叔是科学家，会制造很多新奇的东西。

• zhì　zào

•  zhì　 zhào

Answer explanation

The correct choice is 'zhì zào' which means 'to manufacture' in Chinese. It matches the phrase '制造' in the sentence.

不管遇到什么困难，妈妈都________远不会放弃。

• 勇

• 永

Answer explanation

妈妈都永远不会放弃 indicates that no matter what difficulties she faces, the mother will never give up. Therefore, the correct choice is 永.

安里希望________来有一天，能实现自己的愿望。

• 末

• 未

Answer explanation

安里希望'未'来有一天，能实现自己的愿望。'未'表示将来，符合句意。

表妹的_________比较小，她不懂得自己穿衣服。

• 年纪

• 年级

Answer explanation

年纪 means age, indicating that the cousin is younger and doesn't know how to dress herself. 年级 means grade, which is not suitable in this context.

时间宝贵，我们要懂得_________。

• 爱护

• 珍惜

Answer explanation

时间宝贵，我们要懂得珍惜。这句话强调了要珍惜时间的重要性，正确答案是“珍惜”而不是“爱护”

因为人们的捕杀，动物都快灭绝了。

• 消失；再也没有

• 长久；没有结束

Answer explanation

The correct choice '消失；再也没有' translates to 'disappear; never again' which accurately reflects the situation of animals nearing extinction due to human hunting.

她把零用钱节省下来，买了那套故事书。

• 拿起；提起

• 节约；省下

Answer explanation

The correct answer is '节约；省下' which means 'save; save' in English. It matches the context of the sentence where she saved her pocket money to buy the storybooks.

巧克力________好吃，________吃多了对牙齿不好。

• 因为……所以

• 虽然……但是

Answer explanation

虽然巧克力好吃，但吃多了对牙齿不好，因此选择'虽然……但是'是正确的。

想提高学业成绩，________要认真听课，________要经常温习。

• 不但……还

• 因为……所以

Answer explanation

The correct choice '不但……还' indicates the need to both pay attention in class and regularly review in order to improve academic performance.