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Hongyacha, a new type of wild tea plant from the mountains of southern China, contains little or no caffeine, according to a study published in the Journal of Agricultural and Food Chemistry. “Hongyacha is a wild tea plant only distributed in the narrow mountain area at altitudes of 2,300-3,300 feet (700-1,000 m) of several neighboring villages in the southern region of Fujian Province,” said lead author Dr. Liang Chen from China’s Tea Research Institute and colleagues.

Local people believe that drinking this tea can reduce internal heat, cure colds, and heal stomach pains, etc. However, given its narrow and special distribution, detailed information about hongyacha is lacking.

The researchers found that buds and leaves of hongyacha contain several potentially health-promoting compounds and virtually no caffeine. Digging deeper, the team found that hongyacha has a mutation in the gene encoding the enzyme tea caffeine synthase, which promotes caffeine production in most tea plants.

Naturally low-caffeine hongyacha could possibly become a popular drink because of its distinct composition and unique health benefits,” the scientists said.

1.Where can we find hongyacha?

A In Beijing.

B In Shanghai.

C In Fujian.

D In Zhejiang.

解析：选C。细节理解题。根据第一段第二句Hongyacha is a wild tea plant only distributed in the narrow mountain area at altitudes of 2,300-3,300 feet (700-1,000 m) of several neighboring villages in the southern region of Fujian Province可知这种野生茶树只生长在福建省，故选C。

2.What’s the effect of hongyacha according to local people?

A To reduce internal heat.

B To cure colds.

C To heal stomach pains.

D All of the above.

解析：选D。细节理解题。根据第二段第一句Local people believe that drinking this tea can reduce internal heat, cure colds, and heal stomach pains, etc.可知当地人相信喝这种茶能够去内热、治疗感冒、治胃痛等等，故选D。

3.Which part of hongyacha contains health-promoting compounds and no caffeine?

A Buds and leaves.

B Buds and flowers.

C Roots and branches.

D Only roots.

解析：选A。细节理解题。根据第三段第一句The researchers found that buds and leaves of hongyacha contain several potentially health-promoting compounds and virtually no caffeine.可知洪崖茶的芽和叶含有多种可能对健康有益的化合物，并且几乎不含咖啡因，故选A。

4.Which of the following statements is NOT true?

A Low-caffeine hongyacha may become a popular drink.

B Hongyacha is different in composition from other species of tea.

C Hongyacha has unique health benefits.

D Hongyacha is distributed in many mountains of Fujian.

解析：选D。细节理解题。根据第一段可知，洪崖茶这种野生茶树只在福建省南方山区很窄的几个村落附近生长，故选D。