一、朗读下列句子,并在括号里填入升调(↗)或降调(↘)。
1. Is that the longest river in China? ()
2. Could you tell me more about China, Yaming? ()
3. Can you explain how and why people connect with nature? ()
4. What are some achievements that people have made while exploring nature? ()
5. Do you know why it's called the Yellow River? ()

1. ↗；2. ↗；3. ↗；4. ↘；5. ↗

根据八年级英语语调规则，一般疑问句（以be动词、情态动词、助动词开头的疑问句）用升调，特殊疑问句（以wh-开头的疑问句）用降调。逐个分析：1. 是一般疑问句，用升调；2. 是一般疑问句，用升调；3. 是一般疑问句，用升调；4. 是特殊疑问句，用降调；5. 是一般疑问句，用升调。

二、用所给单词的正确形式填空。
1. The Sahara is one of the largest (desert) in the world.
2. The view from the top of the mountain is (wonder).
3. We should (protection) the environment.
4. The Great Barrier Reef is one of the (amazing) places to visit in the world.
5. Some climbers reach the top (successful).

1. deserts；2. wonderful；3. protect；4. most amazing；5. successfully

1. 考查“one of + 形容词最高级 + 可数名词复数”结构，desert是可数名词，需变为复数形式deserts；2. 系动词is后需接形容词作表语，wonder的形容词形式为wonderful；3. 情态动词should后接动词原形，protection是名词，其动词形式为protect；4. 考查“one of + the + 形容词最高级”结构，amazing是多音节形容词，最高级为most amazing；5. 此处修饰动词reach，需用副词，successful的副词形式为successfully。