The small portions were designed to merely “touch the heart,” as the name literally means, and 19 were first enjoyed as snacks.
答案：(B) as such
as such 在此意為「正因為如此、基於這樣的性質」，承接前面「分量小、只為touch the heart」的說明，帶出「因此最早是當點心吃的」；if so（如果是這樣）、by then（到那時）、in that（在於…這一點）語意都不合。
答對率 31%，而且高分群答對率反而比低分群低。
as such 課本少見，照字面讀成「像這樣」就走偏了；程度好的人反而容易被 in that 拉走。as such 在這裡是「正因為如此」，承接前面已經講過的性質，帶出由它導出的結果。
前半 The small portions were designed to merely "touch the heart"（小分量的設計只是要「點心」）先講性質；後半「最早是當點心吃的」就是由這個性質推出來的結果，用 as such 接最自然。
等於 because 但正式得多，關鍵是後面必須接完整子句：It is a good plan in that it saves money.（這計畫很好，因為能省錢）。本句空格後直接接動詞 were、沒有主詞，子句不完整，in that 根本放不進去——這是最快的排除法，不必靠語感。
if so（如果是這樣）用於假設，本句是既定事實；by then（到那時）需要時間先後可比。
as such（正因為如此）、in that + 子句（因為，等於 because 但更正式）、if so（如果是這樣）、by then（到那時）。
The history of dim sum stretches back to the early days of the Silk Road, an ancient network of trade routes connecting the East and the West. Those who traveled along the routes through China needed places to rest. Teahouses thus sprang up to 16 the weary travelers, offering them a cup of tea to help them regain energy. But the culinary art of dim sum 17 , for it was considered inappropriate to pair tea with food.
Centuries later, the ability of tea to aid in digestion finally became known. Teahouse owners therefore began providing bite-sized snacks as an accompaniment, and the tradition of these Cantonese delicacies was born.
Dim sum is more than just an example of Chinese cuisine. It is 18 an enjoyable dining experience that can span hours. The small portions were designed to merely "touch the heart," as the name literally means, and 19 were first enjoyed as snacks. The small size allows the customer to order a great variety of dishes, creating a banquet of different tastes and flavors. It is customary for big groups to enjoy simple dishes together as 20 . Ultimately, dim sum—the food—is only a small part of the dim sum experience.