【題目】讀經(jīng)緯網(wǎng)圖，完成下面小題。

【1】甲、乙、丙、丁四點(diǎn)中，位于東半球的點(diǎn)是（　�。�

A. 甲、乙B. 甲、丁

C. 丙、丁D. 乙、丙

【2】下列對圖中四點(diǎn)的描述，不正確的是（　　）

A. 甲點(diǎn)以北是高緯度地區(qū)

B. 乙點(diǎn)在夏至日時出現(xiàn)極晝現(xiàn)象

C. 丙點(diǎn)位于北極點(diǎn)的東南方向

D. 丁點(diǎn)不會出現(xiàn)太陽直射現(xiàn)象

【答案】

【1】B

【2】C

【解析】

根據(jù)由經(jīng)線和緯線相互交織所構(gòu)成的網(wǎng)絡(luò)叫做經(jīng)緯網(wǎng)，利用經(jīng)緯網(wǎng)可以確定地球表面任何一個地點(diǎn)的位置。在經(jīng)緯網(wǎng)上，經(jīng)線的度數(shù)叫做經(jīng)度，若相鄰兩條經(jīng)線的經(jīng)度向東增大，就是東經(jīng)，用符號E表示，若相鄰兩條經(jīng)線的經(jīng)度向西增大，就是西經(jīng)，用符號W表示；緯線的度數(shù)叫緯度，若相鄰兩條緯線的緯度向北增大，就是北緯，用符號N表示，若相鄰兩條緯線的緯度向南增大，就是南緯，用符號S表示，進(jìn)行分析解答。

【1】讀圖分析可知，圖示是以北極點(diǎn)為中心的經(jīng)緯網(wǎng)圖。依據(jù)經(jīng)緯度的判讀，圖中甲點(diǎn)的經(jīng)度為45°E，乙點(diǎn)的經(jīng)度為45°W，丙點(diǎn)的經(jīng)度為90°W，丁點(diǎn)的經(jīng)度為135°E；東西半球分界線是20°W和160°E組成的經(jīng)線圈，20°W以東、160°E以西為東半球，20°W以西、160°E以東為西半球。由此可判定，位于東半球的是甲點(diǎn)和丁點(diǎn)；結(jié)合題意。故選：B。

【2】讀圖分析可知，圖示是以北極點(diǎn)為中心的經(jīng)緯網(wǎng)圖。

甲點(diǎn)緯度為60°N，以北是高緯度地區(qū)，故A正確；

乙點(diǎn)位于北極圈上，在夏至日時出現(xiàn)極晝現(xiàn)象，故B正確；

丙點(diǎn)位于北極點(diǎn)正南方向，故C錯誤；

丁點(diǎn)位于北極圈以內(nèi)，不會出現(xiàn)太陽直射現(xiàn)象，故D正確。

故選：C。

考查經(jīng)緯網(wǎng)地圖的判讀。

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