答案：

Explanation:
First drop-down: navigator.geolocation
Second drop-down: navigator.geolocation
Third drop-down: getCurrentPosition(showLocation)
The correct API object is navigator.geolocation because browser-based geographic location is exposed through the Geolocation API, not through window.location. window.location represents the current page URL and navigation state; it does not provide latitude or longitude. The first selection checks whether the browser supports geolocation by evaluating navigator.geolocation. Inside the block, the same object must be used to request the user's current position. The correct method is getCurrentPosition(showLocation), which requests the device's current location and passes a position object to the callback function when the location is available. The callback then reads position.coords.latitude and position.coords.longitude and displays those values with alert(). The alternatives that pass window.location are incorrect because they provide page- location information rather than geographic coordinates. The alternatives that call showLocation(...) directly are also incorrect because the browser must first retrieve the actual position object. References/topics:
Geolocation API, navigator.geolocation, getCurrentPosition(), callback functions, latitude and longitude.

答案：

Explanation:

The SVG image is built from three filled polygon faces, one white ellipse, and two white diagonal line segments. The three < polygon > elements define the black cube faces by connecting multiple coordinate points. The small white oval on the top face must be an < ellipse > because the markup uses cx, cy, rx, and ry; these attributes define an ellipse center point and horizontal/vertical radii. The diagonal marks on the left and right faces are straight segments, so they must use the SVG < line > element. A line is defined with starting coordinates x1, y1 and ending coordinates x2, y2. The first diagonal runs from the bottom point (200,365) to the upper-left point (50,100). The second diagonal must mirror it on the right side, so it starts at (200,365) and ends at (350,100). Therefore, the final coordinate selection is x2= " 350 " y2= " 100 " . References/topics:
SVG shapes, < polygon > , < ellipse > , < line > , coordinate-based vector drawing, SVG markup construction.

答案：

Explanation:
< !DOCTYPE html >
< html >
< body >
< h1 > The Fitness World Around Us - Spring Conference < /h1 >
< form action= " process.php " method= " post " >
< legend > Conference Registration Form < /legend >
< p > < label for= " name " > Name: < /label >
< input type= " text " id= " name " size= " 30 " maxlength= " 30 " value= " " / > < /p >
< input id= " food " placeholder= " Cuisine " list= " food-choice " size= " 40 " / > < br >
< datalist id= " food-choice " >
< option value= " Vegetarian " > Vegetarian < /option >
< option value= " Traditional " > Traditional < /option >
< option value= " Surprise Me " selected > Surprise Me < /option >
< /datalist >
< input type= " submit " >
< /form >
< /body >
< /html >
The correct solution must satisfy all three stated form requirements. The title " Conference Registration Form
" is supplied by the < legend > element in the first valid code segment. That same segment also includes the required attendee name field by using a < label > associated with an < input type= " text " > . The for= " name
" and id= " name " relationship makes the label programmatically connected to the input, which is the correct HTML form-accessibility pattern. For the food options, the correct choice is the segment that uses an < input
> element with a list attribute connected to a < datalist > element. This is required because the attendee must be able to select an option by using the mouse or type a value manually. A < select > element provides a fixed dropdown list, and radio buttons provide fixed clickable choices, but neither is the best match for a type-ahead list requirement. The < datalist > element supplies predefined options such as Vegetarian, Traditional, and Surprise Me while still allowing keyboard entry through the associated input field. References/topics: HTML5 forms, labels, text inputs, datalist, form usability, selectable and typed input options.

答案：C  🗳️

說明：（僅 NewDumps 成員可見）

答案：

Explanation:

Responsive layouts use CSS media queries to apply different style rules according to the viewport width or device characteristics. In this scenario, the three wireframes represent desktop, tablet, and mobile breakpoints.
The desktop layout should use @media only screen and (min-width: 1025px) because desktop screens are the widest target group and begin above the tablet maximum width. The tablet layout should use @media only screen and (min-width: 481px) and (max-width: 1024px) because it covers the middle range between mobile and desktop. The mobile layout should use @media only screen and (min-width: 285px) and (max-width:
480px) because it targets the smallest viewport range shown in the available choices. The option @media only screen and (max-width: 1025px) and (min-width: 1920px) is logically invalid because a viewport cannot simultaneously be at least 1920 pixels wide and no more than 1025 pixels wide. References/topics: responsive web design, CSS media queries, viewport breakpoints, mobile layout, tablet layout, desktop layout.